Another cause of sore throat is allergies that promote postnasal drip. There are, however, more serious conditions of the sinuses and throat that may cause the throat to be sore. If you are experiencing an ongoing sore throat, ask your ear, nose, and throat specialist to examine you.
1907: Samuel Simon patented the first screen printing method in Manchester, England, which was most commonly applied to wallpaper and expensive fabrics. He used rubber bands or squeegees, which are still commonly used in the screen printing process today.
1949: English artist Francis Carr is credited as being the first Briton to create an original work of art using the screen printing method. 1960: Michael Vasilantone invented the first rotary multicolor screen printing machine and was granted a patent for the invention in 1969. 1962: Pop artist Andy Warhol brought screen printing to the forefront with his artistic work.