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
Motion Picture Patents Co. v. Universal Film Manufacturing Co. part of the patented invention, or to place downstream restrictions on the articles making them subject to conditions as to use. The decision overruled "The Button-Fastener Case", and "Henry v. A.B. Dick Co.", which had held such restrictive notices effective and enforceable. The Motion Picture Patents Company (MPP) was the assignee of a number of patents covering motion picture projectors, including US Pat. No. 707,934, on a part of the mechanism used in motion picture Projectors to feed a film through the machine with a regular, uniform, and accurate movement. MPP granted to the Precision Machine Company (PMC) a license