|
| US5103592 | 31 Ene 1991 | 14 Abr 1992 | | Protective device for anti-aircraft installations and nuclear power stations |
| US5120087 | 7 Dic 1990 | 9 Jun 1992 | the Eastern Company | Bulkhead door locking |
| US5931512 | 23 Jul 1997 | 3 Ago 1999 | Industrial Technology Research Institute | Latch mechanism for wafer container |
| US6123370 | 31 Mar 1999 | 26 Sep 2000 | Hartwell Corporation | Increased strength dogging mechanism |
| US6446393 | 12 May 2000 | 10 Sep 2002 | Bath Iron Works Corporation | Watertight door apparatus |
| US6955382 | 11 Dic 2002 | 18 Oct 2005 | Entegris, Inc. | Wafer carrier door and latching mechanism with c-shaped cam follower |