This name for a type of flask invented by James Dewar in 1892 became a trademark
The name later became a genericized trademark after the term "
thermos"... [DOC] [TLE] Thermos | hobbyDB [PAR] Invented by Sir James Dewar in 1892, the vacuum flask consists of two flasks, 
placed one ... inventor and merchant Gustav R. Paalen, who designed various 
types for ...