|
| US4253276 | 31 May 1979 | 3 Mar 1981 | Truth Incorporated | Operator for a casement-type window |
| US4497135 | 15 Nov 1982 | 5 Feb 1985 | Truth Incorporated | Automatic operator and locking mechanism for a closure |
| US4887392 | 13 Abr 1989 | 19 Dic 1989 | Amerock Corporation | Apparatus for actuating and locking a window sash |
| US4937976 | 22 Sep 1989 | 3 Jul 1990 | Truth Incorporated | Window operator and hinge structure |
| US5111615 | 15 Abr 1991 | 12 May 1992 | Wilhelm Weidtmann GmbH & Co. KG | Window with pivotable sash and mechanism for locking the sash in closed position |
| US5152103 | 17 Sep 1991 | 6 Oct 1992 | Truth Division of SPX Corporation | Automatic window sash and lock operator |
| US5367826 | 20 Oct 1992 | 29 Nov 1994 | | Mechanical hatch lifting mechanism |
| US5440837 | 17 Mar 1994 | 15 Ago 1995 | Truth Hardware Corporation | Manually operable sash lift for motorized double hung window |
| US5507120 | 30 May 1995 | 16 Abr 1996 | Schlage Lock Company | Track driven power door operator |
| US5927767 | 1 Nov 1996 | 27 Jul 1999 | Newell Operating Company | Window locking system |
| US6516567 | 19 Ene 2001 | 11 Feb 2003 | Hi-Lex Corporation | Power actuator for lifting a vehicle lift gate |
| US6581331 | 11 Ene 2001 | 24 Jun 2003 | | Window and door closing mechanism |
| US7013604 | 5 Jul 2000 | 21 Mar 2006 | Assa Abloy Financial Services AB | Window operator |
| USRE34230 | 12 Nov 1991 | 27 Abr 1993 | Truth Division of SPX Corporation | Unified casement operator |
