|
| US4112279 | 2. Sept. 1977 | 5. Sept. 1978 | Bell Telephone Laboratories, Incorporated | Piezoelectric relay construction |
| US4425524 | 27. Aug. 1982 | 10. Jan. 1984 | Northern Telecom Inc. | Piezoelectric switch using piezoceramic bending elements, and in particular a relay utilizing such elements |
| US4480162 | 26. Febr. 1982 | 30. Okt. 1984 | International Standard Electric Corporation | Electrical switch device with an integral semiconductor contact element |
| US4626698 | 21. Dez. 1984 | 2. Dez. 1986 | General Electric Company | Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices |
| US4658154 | 20. Dez. 1985 | 14. Apr. 1987 | General Electric Company | Piezoelectric relay switching circuit |
| US4805739 | 14. Jan. 1988 | 21. Febr. 1989 | U.S. Elevator Corporation | Elevator control switch and position indicator assembly |
| US4951787 | 17. Febr. 1989 | 28. Aug. 1990 | U.S. Elevator, Corporation | Elevator control and indicator device |
| US5886428 | 8. Aug. 1997 | 23. März 1999 | Bach GmbH & Co. | Switch, especially relay |
| US6636410 | 4. Dez. 2001 | 21. Okt. 2003 | Omron Corporation | Relay apparatus |
| US6808420 | 25. Sept. 2002 | 26. Okt. 2004 | Tyco Electronics Corporation | High speed electrical connector |
