|
| US3948011 | 14 Ago 1974 | 6 Abr 1976 | | Partition system for a building |
| US4318652 | 29 Jun 1979 | 9 Mar 1982 | Truswal Systems Corporation | Connector plate |
| US5060434 | 8 Ago 1990 | 29 Oct 1991 | | Demountable wall system |
| US5216859 | 29 Abr 1991 | 8 Jun 1993 | Hugh L. Payne
Mike Eldridge | Demountable wall system with single piece horizontal support members and an open wall cavity |
| US5531052 | 28 Dic 1993 | 2 Jul 1996 | | Unitary suspension clip for supporting partition walls |
| US5632128 | 7 Jun 1995 | 27 May 1997 | Gravity Lock Systems, Inc. | Unitary suspension clip for supporting demountable partition walls |
| US6866458 | 21 Mar 2003 | 15 Mar 2005 | Evening Star International, Inc. | Drywall fastener with improved driving head |
