|
| US3974669 | 25 Aug 1975 | 17 Aug 1976 | American Locker Company, Inc. | Lock |
| US4437347 | 18 Jan 1982 | 20 Mar 1984 | Michigan Consolidated Gas Company | Shut-off actuating device |
| US4698630 | 12 Jun 1985 | 6 Oct 1987 | American Locker Group Incorporated | Security system |
| US5791172 | 20 Sep 1996 | 11 Aug 1998 | Multacc Corporation | Electronically controlled security container for retaining door key |
| US5868013 | 1 Jun 1993 | 9 Feb 1999 | Nitinol Technologies, Inc. | High security lock |
| US6046558 | 29 Jul 1998 | 4 Apr 2000 | SLC Technologies, Inc. | Electronic padlock |
| US6047575 | 11 Jun 1997 | 11 Apr 2000 | SLC Technologies, Inc. | Electronic padlock |
| US7076976 | 11 Apr 2005 | 18 Jul 2006 | | Inertial blocking mechanism |
| US7086258 | 19 Mar 2004 | 8 Aug 2006 | Sentrilock, Inc. | Electronic lock box with single linear actuator operating two different latching mechanisms |
| US7420456 | 19 Mar 2004 | 2 Sep 2008 | Sentri Lock, Inc. | Electronic lock box with multiple modes and security states |
| USD495234 | 22 Aug 2003 | 31 Aug 2004 | SentriLock, Inc. | Electronic lock box |
| USD635840 | 23 Apr 2010 | 12 Apr 2011 | 0790437 B.C. Ltd. | Lock |
