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
Alexander Gorlov energy from water flows and wind. In the pursuit of his lifelong dream of creating inexpensive, environmentally friendly hydro-power, Gorlov has developed helical turbines for use in the river, tidal, and open ocean currents. His innovation has led to a series of patents for the Gorlov Helical Turbine which shows great promise for alleviating the worldwide crisis in energy use. This invention was named one of "Popular Science"'s top 100 innovations of 2001. One of the other Gorlov's inventions - "Terrorist Truck-Bomb Protection System" - is certified by four US patents and is placed on the US Department of State