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| US4490884 | 30 Jun 1983 | 1 Ene 1985 | Southco, Inc. | Adjustable friction hinge | | US4630333 | 16 Dic 1985 | 23 Dic 1986 | Southco, Inc. | Adjustable friction hinge | | US5230376 | 1 Abr 1992 | 27 Jul 1993 | Emco Enterprises, Inc., d/b/a Emco Specialties, Inc. | Door with transom window | | US5632066 | 13 Feb 1996 | 27 May 1997 | Yen Yang Basestrong Co. Ltd | Pivot hinge for portable computers |
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