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
John Imray (patent attorney) Parliament. From 1850 to 1867 he ran an engineering business in London, during which time he was granted many patents for his inventions in the field of railway engineering and steam engines. He then became a consulting engineer and patent agent. Among his early clients with whom he collaborated was the English philosopher-scientist Matthew Piers Watt Boulton (named after his grandfather, Matthew Boulton and his grandfather's business partner, James Watt). In 1868 M.P.W. Boulton and Imray jointly patented inventions related to "Propelling vessels". Some of Imray's works were also featured in the 1862 International Exhibition in London In 1871 Imray