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. the creation of a limited monopoly in the tablets not within that granted by the patent." Citing "Motion Picture Patents", "Carbice", and "Leitch", the Court stated, "It is the established rule that a patentee who has granted a license on condition that the patented invention be used by the licensee only with unpatented materials furnished by the licensor may not restrain as a contributory infringer one who sells to the licensee like materials for like use." Such conduct is contrary to the public policy of the United States: [T]he the public policy which includes inventions within the granted monopoly excludes