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| US6564597 | 13 Ago 2001 | 20 May 2003 | Star Lock Systems, Inc. | Vandal resistant T-handle assembly |
| US6832499 | 5 Jun 2003 | 21 Dic 2004 | Star Lock Systems, Inc. | Vandal resistant T-handle assembly |
| US6910356 | 15 Feb 2002 | 28 Jun 2005 | New Security Lock Company, Ltd. | Anti-pick mogul cylinder |
| US6959570 | 18 May 2004 | 1 Nov 2005 | New Security Lock Company, Ltd. | Anti-pick mogul deadlock |
| US7181938 | 26 May 2005 | 27 Feb 2007 | New Security Lock Company, Ltd. | Anti-pick mogul cylinder |
