|
| US4554424 | 25. Mai 1984 | 19. Nov. 1985 | Minnesota Mining and Manufacturing Co. | Electrical switch |
| US4720789 | 31. Okt. 1985 | 19. Jan. 1988 | Bally Manufacturing Corporation | Video exercise or game floor controller with position indicating foot pads |
| US5592152 | 25. Sept. 1995 | 7. Jan. 1997 | | Intruder detecting device to be installed in an integrated raised flooring system |
| US6054658 | 1. Juni 1998 | 25. Apr. 2000 | Tapeswitch Corporation | Electrical switch mat |
| US6297743 | 25. Apr. 2000 | 2. Okt. 2001 | GenCorp Property Inc. | Force-responsive detectors and systems |