|
| US4059832 | 24 Oct 1975 | 22 Nov 1977 | | Portable intrusion alarm |
| US4163225 | 5 Jul 1977 | 31 Jul 1979 | | Mailbox signalling device |
| US4222042 | 11 Jun 1979 | 9 Sep 1980 | | Door alarm |
| US4258359 | 14 Nov 1978 | 24 Mar 1981 | | Portable protective device |
| US4275391 | 8 Feb 1979 | 23 Jun 1981 | Honda Lock Mfg. Co., Ltd. | Key controlled, position sensitive, portable alarm |
| US4284981 | 19 May 1980 | 18 Ago 1981 | | Sensor alarm and support |
| US4284982 | 12 Abr 1979 | 18 Ago 1981 | | Battery operated personal alarm |
| US4319234 | 29 Jul 1980 | 9 Mar 1982 | | Smoke detector with dual sensors |
| US4633232 | 30 Mar 1984 | 30 Dic 1986 | Frederic P. Nelson | Alarm device |
| US4716402 | 12 Nov 1985 | 29 Dic 1987 | | Modular personal security device |
| US4808974 | 1 Jul 1987 | 28 Feb 1989 | | Door alarm |
| US4907707 | 4 Abr 1988 | 13 Mar 1990 | Oscar Mayer Foods Corporation | Merchandiser assembly |
| US5012936 | 15 Dic 1989 | 7 May 1991 | Oscar Meyer Foods Corporation | Merchandiser assembly |
| US5072212 | 17 Dic 1990 | 10 Dic 1991 | | Entry alarm |
| US5219428 | 29 Abr 1992 | 15 Jun 1993 | Becton, Dickinson and Company | Pole camp |
| US5341123 | 6 Dic 1993 | 23 Ago 1994 | | Portable door alarm |
| US5878895 | 30 Jun 1997 | 9 Mar 1999 | Newell Operating Company | Front loading package display system |
| US7207133 | 25 Ene 2005 | 24 Abr 2007 | | Tip-up device |
