|
| US4003802 | 3 feb 1975 | 18 jan 1977 | Dr. C. Otto & Comp. G.m.b.H. | Coke guide machine for a battery of coke ovens |
| US4258967 | 2 nov 1979 | 31 mar 1981 | Digital Equipment Corporation | Integral pivot and lock apparatus for slide rack mounted boxes |
| US4448465 | 2 apr 1982 | 15 maj 1984 | Ampex Corporation | Electrical cable protector |
| US5261645 | 30 sep 1991 | 16 nov 1993 | | Projector ceiling lift |
| US5366203 | 22 jul 1993 | 22 nov 1994 | Safety Lock and Lift, Ltd. | Projector ceiling lift |
| US5551658 | 15 aug 1994 | 3 sep 1996 | Chief Manufacturing, Inc. | Projector lift system |
| US6073892 | 11 jun 1996 | 13 jun 2000 | Chief Manufacturing, Inc. | Modular projector lift |
| US6402109 | 16 maj 2001 | 11 jun 2002 | Chief Manufacturing, Inc. | Self-balancing mounting system for a flat panel display |
| US6585214 | 28 mar 2001 | 1 jul 2003 | Chief Manufacturing Incorporated | Extended travel lift mechanism for a flat panel display |
| US6637711 | 8 jun 2001 | 28 okt 2003 | Draper, Inc. | Projector lift |
| US7631848 | 5 jun 2002 | 15 dec 2009 | Draper, Inc. | Projector lift |
