Artur Fischer from plastic materials (Polyamide) and is available in various shapes and sizes since 1958 (see Wall plug). Fischer held over 1100 patents and overtook Thomas Alva Edison, who held 1093 patents. Fischer also held 5867 trade rights and invented fischertechnik. Further inventions are (bone-)plugs for fixing bone fractures and one of Fischer’s most recent inventions is a gadget that makes it possible to hold and cut the top off an egg of any size. He got started on the problem when a hotel owner complained to him that his guests, on opening their boiled eggs for breakfast, always made a
Canadian Patents and Development Limited Transfer Authorization Bill, all CPDL agreements with Canadian universities were terminated, and all patented faculty inventions held by CPDL were transferred back to each respective university. On August 1, 1993 CPDL ceased all operations. Kretz, A. (2014). Inventions for Industry: A history of Canadian Patents and Development Limited and the commercialization of university research in Canada. Scientia Canadensis: Journal of the History of Canadian Science, Technology, and Medicine, 36(2), 1-36. Canadian Patents and Development Limited Canadian Patents and Development Limited (CPDL) was a Canadian agency tasked with promoting the commercialization of inventions and discoveries arising from government departments and agencies,