| Patents for E06C 1 - Ladders in general (5,355) |
|---|
| 10/10/1978 | US4119177 Collapsible ladder |
| 10/10/1978 | US4119175 Step ladder |
| 09/12/1978 | US4113055 Tree ladder |
| 07/25/1978 | US4102433 Ladder |
| 07/18/1978 | US4100668 Method of making a rung assembly for a ladder |
| 07/04/1978 | US4098372 Collapsible ladder |
| 05/23/1978 | US4090587 Ladder lock |
| 05/16/1978 | US4089390 Ladder hook assembly and ladder |
| 05/16/1978 | US4089084 Internal hinge |
| 05/02/1978 | US4086980 Dismantling ladder |
| 05/02/1978 | US4086979 Scaffold ladder adapter |
| 04/04/1978 | US4082162 A-frame ladder extender |
| 03/21/1978 | US4079814 Stepladders |
| 01/24/1978 | US4069892 Ladder |
| 01/10/1978 | US4067413 Collapsible ladders |
| 12/20/1977 | US4063616 Safety ladder with caster assembly moveable positively to a retracted position |
| 12/06/1977 | US4061202 Hunting stand |
| 11/29/1977 | US4060150 Ladder kit |
| 10/11/1977 | US4053028 Apparatus suitable for use as stairways, stepladders and the like |
| 09/20/1977 | US4049283 Ladder caddy |
| 09/13/1977 | US4047339 High load extendible structure |
| 08/30/1977 | US4044857 Mobile ladder |
| 08/23/1977 | US4043423 Device for converting an extension ladder into a stepladder |
| 07/19/1977 | US4036325 Rung assembly for a ladder and a method of making the rung assembly |
| 07/12/1977 | US4034829 Step stool |
| 06/07/1977 | US4027741 Locking hinge mechanism for a stepladder |
| 05/24/1977 | US4024929 Ladder |
| 05/17/1977 | US4023647 Freestanding ladder structure |
| 05/10/1977 | US4022292 Portable tree stand or crows nest |
| 04/19/1977 | US4018301 Clamp type ladder wall engaging bracket |
| 04/12/1977 | US4016954 Foldable ladder |
| 03/01/1977 | US4009763 Pole ladder |
| 03/01/1977 | US4009762 Convertible ladder-carrier vehicle assembly |
| 01/25/1977 | US4004652 Portable bridge structure |
| 01/11/1977 | US4002223 Telescoping collapsible ladder |
| 12/28/1976 | US3999629 Foldable step stool |
| 12/28/1976 | US3999627 Emergency escape |
| 12/14/1976 | US3997027 Ladder |
| 12/07/1976 | US3995714 Multi-section ladder for scaling poles |
| 11/16/1976 | US3991852 Ladder aids |
| 11/16/1976 | US3991851 Safety ladder for above-the-ground swimming pools |
| 09/14/1976 | US3980157 Stowing hinge for boat ladder |
| 09/07/1976 | US3978944 Ladder |
| 08/17/1976 | US3974894 Portable riser |
| 07/20/1976 | US3970170 Ladder bridging device |
| 06/22/1976 | US3964572 Adjustable safety ladder for above-the-ground swimming pools |
| 06/15/1976 | US3963096 Stepping stool with elevating platform and controls |
| 06/01/1976 | US3960241 Furniture foldable structure |
| 05/11/1976 | US3955240 Multi-position safety lock joint, particularly for folding ladders |
| 05/04/1976 | US3954155 Stepladder dolly |
| 04/06/1976 | US3948353 Extension ladder |
| 04/06/1976 | US3948352 Extension ladder with ladder leveler means |
| 03/30/1976 | US3946834 Self storing fire escape ladder |
| 02/03/1976 | US3935926 Extension ladder |
| 01/06/1976 | US3930562 Removable step climbing assembly |