|
| US3967261 | 10. Okt. 1974 | 29. Juni 1976 | | Proximity sensor with simultaneously active intermixed sensor types |
| US4409590 | 28. Sept. 1981 | 11. Okt. 1983 | General Electric Company | Building security, communication and control system |
| US4470046 | 2. Febr. 1982 | 4. Sept. 1984 | E. I. Du Pont de Nemours and Company | Capacitively coupled machine tool safety system having a digital quantizer |
| US5081406 | 26. Juni 1990 | 14. Jan. 1992 | Saf-T-Margin, Inc. | Proximity responsive capacitance sensitive method, system, and associated electrical circuitry for use in controlling mechanical and electro-mechanical equipment |
| US6204772 | 16. Dez. 1999 | 20. März 2001 | Caterpillar Inc. | Method and apparatus for monitoring the position of a machine |
| US7570067 | 24. Okt. 2006 | 4. Aug. 2009 | Georgia-Pacific Consumer Products LP | Minimizing paper waste carousel-style dispenser apparatus, sensor, method and system with proximity sensor |
| US7793882 | 7. Dez. 2009 | 14. Sept. 2010 | Georgia-Pacific Consumer Products LP | Electronic dispenser for dispensing sheet products |
| US7878446 | 20. Okt. 2006 | 1. Febr. 2011 | Georgia-Pacific Consumer Products LP | Dispenser housing with motorized roller transport |
