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
Ján Bahýľ allowed Bahýľ to study at the Vienna Military Academy, where he graduated in 1879 and was commissioned as a lieutenant. During his time in the army, Bahýľ developed a number of inventions, many of which involved hydraulics. Bahýľ financed his first invention himself. It was called the Steam Tank, and was purchased by the Russian army. Bahýľ was granted seventeen patents in all, including patents for the tank pump, a hot air balloon combined with an air turbine, the first petrol engine car in Slovakia (in partnership with Anton Marschall), and a lift to the Bratislava Castle. He flew one