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| Patents for E06C 9 - Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes (1,320) |
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| 03/21/1978 | US4079811 Cabinet type fire escape | | 02/28/1978 | US4076102 Trap door and folding ladder arrangement | | 02/21/1978 | US4075272 Ladder rung implanter | | 01/24/1978 | US4069892 Ladder | | 01/10/1978 | US4067413 Collapsible ladders | | 01/10/1978 | US4067412 Floating ladder | | 08/02/1977 | US4038793 Wall structure | | 07/26/1977 | US4037686 Escape ladder | | 02/22/1977 | US4008550 Device for setting sockets for swimming pool ladders | | 01/04/1977 | US4000788 Belt-on tree step (BOTS) | | 12/28/1976 | US3999627 Emergency escape | | 12/14/1976 | US3997026 Collapsible ladder assembly suitable for use as fire escape | | 11/02/1976 | US3989177 Ladder rung implanter | | 09/28/1976 | US3982608 Fire escape | | 08/17/1976 | US3974615 Apparatus for forming steps in manholes and the like | | 08/10/1976 | US3973646 Ladder for swimming pools, and the like | | 07/13/1976 | US3968857 Device for preventing unauthorized access to permanent ladders | | 06/15/1976 | US3963097 Fire ladder | | 03/30/1976 | US3946833 Collapsible ladder suitable for use as fire escape | | 01/06/1976 | US3930562 Removable step climbing assembly |
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