|
| US3961319 | 21. Mai 1975 | 1. Juni 1976 | AMF Incorporated | Ground circuit monitor |
| US3974492 | 7. Mai 1974 | 10. Aug. 1976 | | Alarm system |
| US4040045 | 27. Mai 1975 | 2. Aug. 1977 | | Method and apparatus for creating and detecting alarm condition using a master antenna television system |
| US4121201 | 22. März 1974 | 17. Okt. 1978 | Bunker Ramo Corporation | Carrier current appliance theft alarm |
| US4237450 | 13. Nov. 1978 | 2. Dez. 1980 | | Appliance theft alarm |
| US4321593 | 21. Febr. 1980 | 23. März 1982 | | Television set with supervisory functions of alarming burglary and safe watching distance |
| US4333094 | 26. Juni 1980 | 1. Juni 1982 | Homexx International Corp. | Swimming pool alarm |
| US4945341 | 5. Apr. 1989 | 31. Juli 1990 | | Alarm system for electrical devices |
| US5818338 | 7. Apr. 1997 | 6. Okt. 1998 | | Flood light lamp removal alarm |
| US6078257 | 2. Okt. 1999 | 20. Juni 2000 | | Current detector flood light lamp removal alarm |
