| Patents for E04G 21 - Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work (22,137) |
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| 08/24/1976 | US3976092 Apparatus for the distribution of concrete |
| 08/17/1976 | US3974618 Method of and means for multi-story building construction |
| 08/10/1976 | US3973680 Devices for erecting a building from prefabricated sections |
| 08/03/1976 | US3972508 Take-up actuator |
| 07/27/1976 | US3971175 Factory-made habitation cell |
| 07/20/1976 | US3969920 Splicer for reinforcing bars |
| 07/13/1976 | US3968602 Protective workman and equipment covers |
| 07/06/1976 | US3967421 Tie formed of stressed high-tensile steel tendons |
| 07/06/1976 | US3967420 Portable wall system and method of installing same |
| 06/29/1976 | US3965557 Apparatus for affixing prealigned corner posts to box-like structures before assembling same |
| 06/22/1976 | US3964512 Self-supporting pipe boom |
| 06/22/1976 | US3964154 Device for simultaneously stressing a number of tension elements |
| 06/22/1976 | US3964137 Slide fastener |
| 06/15/1976 | US3963210 Apparatus for setting anchor bolts and other objects in concrete slabs |
| 06/08/1976 | US3961774 Vibratory compactor |
| 06/08/1976 | US3961387 Trig making tools |
| 06/01/1976 | US3960356 Anchor bolt holder |
| 05/25/1976 | US3958824 Lifting frame and methods of lifting prefabricated building modules |
| 05/11/1976 | US3955844 Crane cable attachment |
| 05/11/1976 | US3955332 Method of building a structure from bricks and mortar |
| 04/27/1976 | US3953048 Joist dolly |
| 04/20/1976 | US3950914 Building elements |
| 04/20/1976 | US3950905 Method for prestressing a structural member |
| 04/20/1976 | US3950840 Method of anchoring a ring tensioning member in a circular container, especially a concrete tank or a concrete tube |
| 04/13/1976 | US3950214 Hand masking machine |
| 04/13/1976 | US3949907 Storage bin with liquid sealed discharge opening |
| 04/13/1976 | US3949834 Safety net and adjustable support therefor |
| 03/30/1976 | US3946992 Construction fence post |
| 03/23/1976 | US3945484 Single belt, multiple conveyor system |
| 03/09/1976 | US3942779 Clamping assembly |
| 03/09/1976 | US3942554 Extendable crane with folding conduit |
| 03/09/1976 | US3942238 Method for reinforcing structures |
| 02/24/1976 | US3940109 Lifting device for raising, lowering and suspending heavy loads |
| 02/17/1976 | US3938619 Stanchion |
| 02/10/1976 | US3937511 Mortar tool |
| 02/03/1976 | US3936212 Ride-type surface-working machines |
| 01/20/1976 | US3933570 Panel manufacturing machine and method |