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| US4751834 | 30 Jul 1987 | 21 Jun 1988 | | Door lock guard device |
| US5131189 | 9 May 1991 | 21 Jul 1992 | | Security door having antiprying member |
| US5406814 | 30 Mar 1993 | 18 Apr 1995 | | Door lock system |
| US5547239 | 27 Jan 1995 | 20 Aug 1996 | M.A.G. Eng. & Mfg. Inc. | Latch guard for center hung doors |
| US5678871 | 7 Dec 1995 | 21 Oct 1997 | | Security astragal |
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| US6122945 | 11 Feb 1999 | 26 Sep 2000 | | Keyless door knob security device with stabilizer arm |
| US6406076 | 11 Jan 2000 | 18 Jun 2002 | | Latch guard |
| USD616284 | 13 May 2008 | 25 May 2010 | | Latch guard |
| USH1766 | 18 Mar -3 | | The United States of America as represented by the Secretary of the Navy | Integrated astragal |
