The arrival of Miffonis corresponded to a prosperous period of construction of reinforced concrete lighthouses in Canada.

The initial forecast of the Commission de phares noted that fourteen towers had be constructed of reinforced concrete, but in the end, more than twenty-five lighthouses were constructed with the material between 1906 and 1914.
The first five reinforced concrete lighthouses were built by the Steel Concrete Company of Montréal between 1906 and 1908, the company chosen because they possessed a great deal of expertise using concrete.
The Department of Fisheries and Oceans was dependent on this firm to complete the towers in a reasonable timeframe.

The five reinforced concrete lighthouses constructed by the Steel Concrete Co. used plans from the Chief Engineer of the company, Emil Andrew Wallberg.
Wallberg's plans called for round towers without buttresses.
Their construction, along with Wallberg's plans, were a source of conflict with the Department of Fisheries and Oceans because the Department preferred the lighthouses to be built using their own plans.
The conflict escalated when Wallberg asked for a patent in May 1907 for the reinforced concrete round tower design, a request which the Department contested in August on the basis of the refusal of Wallberg to use the plans furnished by the Department.
All the same, Wallberg obtained his patent in 1908.
The Department, however, obtained success in regards to the choice of the plans, as lighthouses being built from the end of 1908 were required to be constructed according to the Department's directives using a mainly tapered form.

Meanwhile, Miffonis applied for a patent for his plans of reinforced concrete lighthouses with flying buttresses in June 1907, about a month after the patent application of Wallberg.
Miffonis' request described the physical characteristics of his model of a concrete tower and the differences between his plan and the models of concrete towers already patented; i.e., the presence of the flying buttresses placed at the ends of the prismatic tower and the presence of floors at the junction of the buttresses and the walls of the tower.
There was also a description of the advantages of his model, i.e., a great solidity of the tower and a great resistance to lateral wind forces due to the flying buttresses as well as a reduction of the quantity of concrete needed for construction.

Miffonis' patent application was contested by Wallberg who accused the patent of using Wallberg's plans.
However, Wallberg's claims were rejected by Miffonis and the Department of Fisheries and Oceans because Wallberg's plans never included flying buttresses.
Miffonis obtained his Canadian patent on June 2, 1908.
He also obtained a patent in the United States in 1910 for the same kind of reinforce concrete lighthouse with flying buttresses.

During the same period, a correspondence between Miffonis and William Patrick Anderson, Chief Engineer of the Department of Fisheries and Oceans, dated February 21, 1908, indicated that the French engineer was ready to renounce his rights in favor of the Department to use his plans.
This practice, then widespread, was used by government agencies to prevent companies from charging fees during construction.
Two other correspondences, dated February 25, 1908 and March 20, 1908 between Miffonis and Anderson also demonstrate that the latter was irritated by the patent request of his subordinate, whom Anderson reminds that the plans of the towers would not have been possible without the advice Anderson had given Miffonis for the addition of floors and buttresses.
But, it is also recognized in the two letters that the father of the concept was the French engineer.

 
Between 1909 and 1911, Miffonis produced plans and supervised the construction of three of the tallest lighthouses with flying buttresses, i.e., in Pointe-au-Père, in île Caribou, and in Estevan Point.
A total of nine lighthouses of this type were built under the auspices of Anderson.
The expertise of Miffonis in the use of reinforced concrete was not limited to ligh
The arrival of Miffonis corresponded to a prosperous period of construction of reinforced concrete lighthouses in Canada.
The initial forecast of the Commission de phares noted that fourteen towers had be constructed of reinforced concrete, but in the end, more than twenty-five lighthouses were constructed with the material between 1906 and 1914. The first five reinforced concrete lighthouses were built by the Steel Concrete Company of Montréal between 1906 and 1908, the company chosen because they possessed a great deal of expertise using concrete. The Department of Fisheries and Oceans was dependent on this firm to complete the towers in a reasonable timeframe.
The five reinforced concrete lighthouses constructed by the Steel Concrete Co. used plans from the Chief Engineer of the company, Emil Andrew Wallberg. Wallberg's plans called for round towers without buttresses. Their construction, along with Wallberg's plans, were a source of conflict with the Department of Fisheries and Oceans because the Department preferred the lighthouses to be built using their own plans. The conflict escalated when Wallberg asked for a patent in May 1907 for the reinforced concrete round tower design, a request which the Department contested in August on the basis of the refusal of Wallberg to use the plans furnished by the Department. All the same, Wallberg obtained his patent in 1908. The Department, however, obtained success in regards to the choice of the plans, as lighthouses being built from the end of 1908 were required to be constructed according to the Department's directives using a mainly tapered form.
Meanwhile, Miffonis applied for a patent for his plans of reinforced concrete lighthouses with flying buttresses in June 1907, about a month after the patent application of Wallberg. Miffonis' request described the physical characteristics of his model of a concrete tower and the differences between his plan and the models of concrete towers already patented; i.e., the presence of the flying buttresses placed at the ends of the prismatic tower and the presence of floors at the junction of the buttresses and the walls of the tower. There was also a description of the advantages of his model, i.e., a great solidity of the tower and a great resistance to lateral wind forces due to the flying buttresses as well as a reduction of the quantity of concrete needed for construction. 
Miffonis' patent application was contested by Wallberg who accused the patent of using Wallberg's plans. However, Wallberg's claims were rejected by Miffonis and the Department of Fisheries and Oceans because Wallberg's plans never included flying buttresses. Miffonis obtained his Canadian patent on June 2, 1908. He also obtained a patent in the United States in 1910 for the same kind of reinforce concrete lighthouse with flying buttresses.
During the same period, a correspondence between Miffonis and William Patrick Anderson, Chief Engineer of the Department of Fisheries and Oceans, dated February 21, 1908, indicated that the French engineer was ready to renounce his rights in favor of the Department to use his plans. This practice, then widespread, was used by government agencies to prevent companies from charging fees during construction. Two other correspondences, dated February 25, 1908 and March 20, 1908 between Miffonis and Anderson also demonstrate that the latter was irritated by the patent request of his subordinate, whom Anderson reminds that the plans of the towers would not have been possible without the advice Anderson had given Miffonis for the addition of floors and buttresses. But, it is also recognized in the two letters that the father of the concept was the French engineer.
 
Between 1909 and 1911, Miffonis produced plans and supervised the construction of three of the tallest lighthouses with flying buttresses, i.e., in Pointe-au-Père, in île Caribou, and in Estevan Point. A total of nine lighthouses of this type were built under the auspices of Anderson. The expertise of Miffonis in the use of reinforced concrete was not limited to ligh
Henri de Miffonis