| Patents for E04H 12 - Towers; Masts, poles; Chimney stacks; Water-towers; Methods of erecting such structures (12,702) |
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| 09/04/1979 | US4166347 Composite structural member and method of constructing same |
| 08/21/1979 | CA1060673A1 Liquidtight tank or reservoir made of prestressed reinforced concrete, particularly for purification plants |
| 07/17/1979 | US4161723 Flagpole particularly for indicating goals in skiing competitions |
| 07/17/1979 | US4161090 Post assembly and method |
| 07/12/1979 | WO1979000391A1 Post mounting |
| 06/12/1979 | CA1056123A1 Method and arrangement for staying climb rods for co-operation with so-called climbing jacks |
| 05/29/1979 | US4156332 Knockdown sign post assembly |
| 05/22/1979 | US4155210 Process for building up towers, particularly water towers |
| 05/16/1979 | EP0001964A1 Post readily yieldably deformable under vehicle impact |
| 05/01/1979 | US4152757 Terminal structure for outdoor luminaire |
| 05/01/1979 | US4151974 Anchor |
| 04/17/1979 | US4149347 Lowerable mast |
| 04/10/1979 | US4148455 Stands for tubular articles |
| 03/06/1979 | US4142343 Post apparatus and methods of constructing and utilizing same |
| 02/21/1979 | EP0000793A1 Transportable mast, especially for directional broadcast installations |
| 02/13/1979 | US4138805 Wheeled portable trailer substructure for elevatable drawworks, masts and setback tower |
| 02/06/1979 | US4137622 Method of preparing a support |
| 01/30/1979 | US4136811 H-shaped steel column base member and welding thereof |
| 01/23/1979 | US4135340 Modular drill rig erection systems |
| 01/23/1979 | US4135336 Plastic guy wire guard and method of making and using same |
| 01/16/1979 | US4134237 Modular section mast |
| 01/16/1979 | CA1046228A1 Sleeve connector for utility pole replacement |
| 11/28/1978 | US4127739 Level mount electrical component bracket |
| 11/28/1978 | US4127199 Lifting apparatus |
| 11/28/1978 | US4126974 Expandable beam structure |
| 11/28/1978 | CA1043182A1 Slotted tubular flagpole |
| 11/14/1978 | US4125217 Method of connecting hollow steel column to a hollow steel base member |
| 11/14/1978 | US4124959 Clothes drier socket |
| 10/31/1978 | CA1041270A1 Tower having raising and lowering means |
| 10/24/1978 | US4121803 Flagholder |
| 10/17/1978 | US4120125 Post support |
| 10/03/1978 | CA1039473A1 Method and apparatus for guying a load bearing member |
| 09/26/1978 | US4115975 Foldable/extensible structure |
| 09/26/1978 | US4115965 Guy strain insulators |
| 09/19/1978 | US4114861 Fence rail connector |
| 09/12/1978 | US4112633 Protective workman and equipment covers |
| 09/05/1978 | CA1037727A1 Method for replacing existing utility pole without disturbing hardware mounted thereon |
| 08/29/1978 | US4109910 Weighted tennis net support post |
| 08/15/1978 | US4106244 Cooling tower |
| 08/08/1978 | US4104868 Precast chimney system |
| 06/27/1978 | US4097165 Pole top extension bracket |
| 06/20/1978 | US4095381 Pole base mount assembly |
| 05/30/1978 | US4092079 Connector for use in a method for replacing an existing utility pole without disturbing hardware mounted thereon |
| 05/09/1978 | US4088719 Compression |
| 04/18/1978 | US4084359 Survey apparatus |
| 03/21/1978 | US4079559 Hinged base for lighting pole |
| 03/21/1978 | US4079555 Automatic color guard flagpole |
| 03/07/1978 | US4077174 Construction element in particular for towers, silos or the like |
| 02/28/1978 | US4076126 Multipurpose display rack |
| 01/31/1978 | US4070837 Hollow steel column base member and welding thereof |
| 01/17/1978 | US4068436 H-shaped steel column base member and welding thereof |
| 01/03/1978 | US4066372 Slotted flange connector useable in a method for replacing an existing utility pole without disturbing hardware mounted thereon |
| 11/22/1977 | US4059129 Cylindrical body provided with means for counteracting vibrations resulting from a transversely flowing fluid |
| 09/20/1977 | US4048779 Turnbuckle connector useable in a method for replacing an existing utility pole without disturbing hardware mounted thereon |
| 09/20/1977 | US4048776 Steel column base member |
| 08/09/1977 | US4040217 Apparatus for erecting a mast |
| 08/09/1977 | US4040214 Adjustable ground support for volleyball poles and the like |
| 07/26/1977 | US4037384 Anchorage assemblies |
| 07/05/1977 | US4033080 Concrete pole to be connected with a wood pole and method of replacing the lower part of the wood pole with the concrete pole |
| 06/28/1977 | US4032244 Pole top extension bracket |
| 06/07/1977 | US4027856 Fence post assembly |
| 06/07/1977 | US4027441 Arrangement for erecting and dismounting an elongate object having one end articulated to a foundation |
| 06/07/1977 | US4027440 Extensible interlocking structure of multi-lateral cross-section |
| 05/10/1977 | US4022864 Method of forming glass fiber construction member |
| 05/03/1977 | US4020606 Street lighting columns |
| 04/19/1977 | US4018057 Off shore structures |
| 04/05/1977 | US4015397 Service poles and accessories |
| 03/15/1977 | US4011694 Method and apparatus for guying a load bearing member |
| 02/15/1977 | US4007564 Breakaway coupling and assembly |
| 02/08/1977 | US4007075 Method of making a fiberglass pole |
| 01/25/1977 | US4004383 Method and device for anchoring a strut |
| 12/28/1976 | US3999353 Reversible pilaster shoes |
| 12/28/1976 | US3999340 Insulating cover and clamp for guy wires or covers |
| 12/14/1976 | US3996708 Ground anchor with looped top support |
| 12/14/1976 | US3996707 Ground anchor for volleyball and like games |
| 11/16/1976 | US3991532 Sign post construction |
| 11/02/1976 | US3988870 Lamp post base |
| 10/26/1976 | US3987593 Posts |
| 10/12/1976 | US3984962 Mast structure and composite structural fitting therefore |
| 09/14/1976 | US3979873 Extending boom construction |
| 08/31/1976 | US3977639 Free fall safety assembly for use with a luminaire raise-lower apparatus |
| 08/31/1976 | US3977200 Lighthouse or beacon construction |
| 08/31/1976 | US3977139 Tower having raising and lowering means |
| 08/17/1976 | US3975580 Articulated crossarm assembly for electrical conductor support structure |
| 08/17/1976 | US3974756 Apparatus and method for field burning and fog or smog control |
| 07/13/1976 | US3968602 Protective workman and equipment covers |
| 06/15/1976 | US3963210 Apparatus for setting anchor bolts and other objects in concrete slabs |
| 06/01/1976 | US3960064 Tall stack construction |
| 06/01/1976 | US3959946 Pole structure |
| 05/25/1976 | US3959645 Bracket and lamp globe mounting apparatus |
| 05/25/1976 | US3958381 Concrete filled tapered tubular tower |
| 05/25/1976 | US3958376 Extendible tower structure |
| 04/27/1976 | US3952695 Slotted tubular flagpole |
| 04/27/1976 | US3952467 Extendible tower structure |
| 04/20/1976 | US3950913 Method and apparatus for constructing a suspension bridge tower |
| 04/06/1976 | US3948210 Cap for a flag pole |
| 03/30/1976 | US3946569 Method and means for installing a post |
| 03/23/1976 | US3945107 Process of erecting vertical rising mast |
| 03/23/1976 | US3945106 Method of mounting a natural draft cooling tower |
| 02/03/1976 | US3936206 Tubular pole slip joint construction |