| Patents for E04G 3 - Scaffolds essentially supported by building constructions, e.g. adjustable in height (4,845) |
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| 03/18/1980 | US4193708 Girder clamp |
| 01/01/1980 | US4181194 Safety clamp device and apparatus utilizing same |
| 11/28/1979 | EP0005667A1 Console for supporting a scaffold floor |
| 09/19/1979 | EP0003982A1 Hanging scaffold for walls with recessed parts |
| 08/28/1979 | CA1061382A1 Roof support system for a suspended staging |
| 08/14/1979 | US4164268 Adjustable protective rollers for suspended scaffolding |
| 07/31/1979 | CA1059281A1 Moving work station for use in constructing a building roof |
| 06/05/1979 | US4157129 Stabbing board assembly |
| 05/15/1979 | US4154318 Retractable suspended scaffolding on a self-propelled truck, particularly adapted for maintenance work on road-bridges and the like |
| 04/04/1979 | EP0001342A1 Improvements in girder fittings |
| 04/04/1979 | EP0001341A1 Improvements in girder roller fittings |
| 03/27/1979 | CA1051490A1 Movable apparatus adhering to the surface of a wall |
| 02/06/1979 | US4137996 Portable scaffolding device |
| 01/02/1979 | US4132287 Support assembly |
| 12/19/1978 | US4130179 Portable support for a scaffold |
| 11/21/1978 | CA1042960A1 Movable vacuum secured apparatus for inclined or vertical surfaces |
| 10/31/1978 | US4122916 Scaffolding |
| 10/24/1978 | US4121690 Roofer's staging |
| 10/17/1978 | US4120378 Movable work support for cylindrical structures |
| 08/22/1978 | US4108277 Work platform |
| 06/27/1978 | US4096922 Roof support system for a suspended staging |
| 06/20/1978 | US4095670 Foldable platform for raise drilling |
| 04/04/1978 | US4082161 Continuous adjusting scaffold |
| 03/21/1978 | US4079813 Step-out window washer box |
| 03/14/1978 | US4078633 Modular staging with platform jacks |
| 02/21/1978 | US4074792 Portable hanging scaffold |
| 02/21/1978 | US4074789 Mobile rolling support system for scaffolding used in building construction |
| 01/17/1978 | US4068895 Demolition machine for delining a furnace |
| 01/17/1978 | US4068738 Scaffolding |
| 01/17/1978 | US4068446 Moving work station for use in constructing a building roof |
| 11/29/1977 | US4060358 Climbing scaffolding assemblies with associated shuttering |
| 11/15/1977 | US4058184 Scaffold |
| 06/14/1977 | US4029173 Foldable scaffold devices |
| 06/14/1977 | US4029164 Movable apparatus adhering to the surface of a wall |
| 05/03/1977 | US4021011 Device for attaching a scaffolding bracket to a vertical wall surface |
| 05/03/1977 | US4020921 Roofer's staging |
| 03/08/1977 | US4010823 Or working inside of a large drum |
| 02/15/1977 | US4007808 Line securing device |
| 11/30/1976 | US3994036 Flexible staging platform and the like |
| 11/16/1976 | US3991842 Movable vacuum secured apparatus for inclined or vertical surfaces |
| 07/06/1976 | US3967699 Hoisting apparatus, particularly for a cooling tower |
| 07/06/1976 | US3967696 Stage safety stabilizer |
| 05/18/1976 | US3957135 Climbing device |
| 04/20/1976 | US3951232 Multifloor-type escape bridge apparatus for use in multistory building |
| 03/23/1976 | US3945462 Hanger brackets |