|
| US3940738 | 10. Juli 1974 | 24. Febr. 1976 | | Electric lock |
| US3967166 | 25. Apr. 1973 | 29. Juni 1976 | | Electronic lock |
| US4103289 | 27. Apr. 1976 | 25. Juli 1978 | | Calculator theft prevention device |
| US4150731 | 14. Dez. 1977 | 24. Apr. 1979 | | Locking device |
| US4209709 | 5. Sept. 1978 | 24. Juni 1980 | BBJ Laboratories | Anti-theft ignition system |
| US4277777 | 22. März 1979 | 7. Juli 1981 | Friedemann Joachim Schulz | Alarm combination lock |
| US4327353 | 9. Mai 1980 | 27. Apr. 1982 | George W. Beard | Security system |
| US4385288 | 4. Mai 1981 | 24. Mai 1983 | Fifth Dimension, Inc. | Motion responsive alarm system |
| US4641124 | 13. Sept. 1982 | 3. Febr. 1987 | | Vehicle security alarm |
| US4916299 | 4. März 1988 | 10. Apr. 1990 | ILCO Unican Inc. | Card recepticle housing |
| US5600979 | 27. Sept. 1995 | 11. Febr. 1997 | Winner International Royalty Corporation | Vehicle anti-theft system |
