| 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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| 06/19/1990 | US4934596 Slurry distributor |
| 06/19/1990 | US4934118 Stressing element of fiber composites as well as process and device for the stressing and anchorage of such a stressing element |
| 06/14/1990 | WO1990006410A1 Process for the construction of walls of buildings and/or work performed thereon |
| 06/13/1990 | DE3841115A1 Device for positioning reinforcing elements |
| 06/13/1990 | CN2058194U Furnace lining bricklayer's profile gauge |
| 06/12/1990 | US4932185 Window cleaner's safety line anchor |
| 06/12/1990 | US4932135 Chalkline string holder |
| 06/12/1990 | US4932134 Used with a stake for locating foundation trenches and concrete forms |
| 06/06/1990 | EP0258235B1 Device in concrete structures |
| 06/05/1990 | US4930269 Apparatus and method for lifting tilt-up wall constructions |
| 05/31/1990 | DE3923691C1 Safety equipment for building sites - has safety belt wire line passing through eyelet in upwards angled holder arm |
| 05/29/1990 | US4929650 Coating material for tendon for prestressed concrete |
| 05/29/1990 | US4928929 Construction safety netting |
| 05/29/1990 | US4928790 Restraining device |
| 05/23/1990 | CN2057439U Multifunctional build tool for laying bricks |
| 05/23/1990 | CN2057438U 50 mm high-frequency electric type concrete vibrator |
| 05/22/1990 | US4926892 Temporary enclosure structure |
| 05/17/1990 | WO1990005217A1 Arrangement in mobile foot tunnel system, and arrangement in mounting fittings for coupling together foot tunnel sections |
| 05/16/1990 | EP0368653A1 Concrete screed rails |
| 05/16/1990 | EP0368424A1 A method and an assembly for providing a guide wire along a wall to be built |
| 05/16/1990 | EP0368393A1 Device for screening an outside wall of a building |
| 05/15/1990 | US4924579 Layout system for construction foundation placement |
| 05/15/1990 | CA1268958A1 Screed rails |
| 05/09/1990 | EP0366664A1 Prestressed construction element of composite structure and method for element fabrication. |
| 05/09/1990 | CA2000544A1 Automated installation for the laying of masonry on a wall |
| 05/03/1990 | WO1990004692A1 A staircase and a staircase tread member |
| 05/02/1990 | CN1041806A Wet injector set for concrete |
| 04/25/1990 | EP0364823A1 Device for pneumatically dispensing concrete hydromechanically transported in a dense flow |
| 04/25/1990 | CN1041633A Tensioner for erecting flexible cable |
| 04/18/1990 | EP0363779A1 Anchoring device for a tensioning rod composed of a fibre composite |
| 04/18/1990 | EP0232392B1 Process and device for connecting at least two rods |
| 04/18/1990 | CA2000952A1 An apparatus for pneumatically discharging concrete |
| 04/12/1990 | DE3834311A1 Auxiliary device for mounting plates (panels) |
| 04/11/1990 | EP0362247A1 Method and device for the construction of buildings by raised slabs |
| 04/11/1990 | CN2055837U Trailing tension device for big tonnage rigging |
| 04/10/1990 | CA1267587A1 Reinforcement binding machine |
| 04/05/1990 | WO1990003484A1 An apparatus for joining two intersecting reinforcing bars |
| 04/05/1990 | DE3831518A1 Stressing member comprising a bundle of sheathed strands, and process for the production thereof |
| 03/28/1990 | CN2055154U Prestressed variable angle stretching device |
| 03/22/1990 | WO1990002860A1 Improvements in or relating to posts |
| 03/22/1990 | WO1990002635A1 Improvements in and relating to the loading of lashing machines, stapling guns and like apparatus with wire ties, staples and like fastener elements |
| 03/22/1990 | WO1990002610A1 Process and device for intermittently spraying a pasty composition |
| 03/21/1990 | EP0358721A1 Method and apparatus for forming a path for a screeding means. |
| 03/21/1990 | CN2054819U Speedy construction concrete shuttering |
| 03/20/1990 | US4909483 Support for the handrail of a detachable handrail unit |
| 03/20/1990 | US4909002 Concrete screed rails |
| 03/14/1990 | EP0358631A1 Process and apparatus for intermittently spraying a pasty composition |
| 03/14/1990 | EP0358433A2 Construction apparatus and construction method |
| 03/14/1990 | EP0357929A2 Mehtod and device to gauge setting accelerators during application of shotcrete |
| 03/08/1990 | WO1990002235A1 Improvements relating to wall building aids |
| 02/27/1990 | US4903454 Building cladding system |
| 02/22/1990 | WO1990001094A3 A process and device for distributing pumpable viscous materials among several lines |
| 02/22/1990 | DE3926141A1 Reinforcing rod applicator to concrete shuttering - has box-shaped retainer formed from sheet metal blank with transverse profiles |
| 02/20/1990 | US4901403 Fastening means for fastening a protective sheet material to a scaffold or a similar frame structure |
| 02/15/1990 | DE3827448A1 Method for producing gradient levelling on bridge slabs |
| 02/14/1990 | CN2052798U Multi-functional vertical corrector |
| 02/14/1990 | CN2052797U Concrete ejector |
| 02/13/1990 | US4900194 Portable machine and process for forming ground structures reinforced with textile threads |
| 02/08/1990 | WO1990001094A2 A process and device for distributing pumpable viscous materials among several lines |
| 02/07/1990 | CN1006728B Intermediate anchor arrangement and its manufacture method |
| 02/07/1990 | CN1006727B Improvements in prefabricated modules, and the use thereof in the building industry |
| 02/06/1990 | CA1265322A1 Method and device for building wall slabs from building blocks |
| 02/01/1990 | DE3825564A1 Apparatus for shifting wall elements |
| 01/30/1990 | US4896864 Safety barrier |
| 01/25/1990 | WO1990000658A1 Anchorage piece, in particular for concrete |
| 01/25/1990 | WO1990000657A1 A stanchion assembly |
| 01/24/1990 | EP0351582A1 Great length pre-stressing strand for prestressed concrete with grouted anchoring, and method for installing it |
| 01/18/1990 | DE3915090A1 Portal-like erection crane for erecting and dismantling panel and large-area formwork for round reinforced-concrete tanks |
| 01/17/1990 | EP0350822A2 Process for renovating the corrosion prevention of tension elements of bridges or similar stayed constructions, and apparatus for carrying out this process |
| 01/17/1990 | CN2051259U Stretch device for single reinforcing bar |
| 01/16/1990 | US4893966 Lock apparatus for introducing dry granular materials into a pneumatic conveying conduit and spray gun for such materials |
| 01/09/1990 | US4892441 Apparatus and a method for distributing concrete and similar materials to selected points of use |
| 01/09/1990 | US4892169 For climbing a series of vertically spaced platforms |
| 01/09/1990 | US4891888 Auxiliary tool for carefully levelling finishing floors |
| 01/03/1990 | EP0348710A2 Process for the Manufacture of a Self-Adhesive Masking Foil |
| 01/03/1990 | EP0206224B1 Device for the pneumatic application of a hardenable building material hydromechanically transported in a highly viscous flow, particularly of a hydraulically injected concrete or mortar |
| 01/03/1990 | CN1006317B Self-progressive lining-brick laying machine for u-shaped cannels |
| 12/27/1989 | CN1038324A Multipurpose machine for concrete wall pouring, brick wall bonding and plastering |
| 12/21/1989 | DE3818944A1 Internal (immersion) vibrator for compacting powdered media |
| 12/20/1989 | EP0347326A1 Protecting cap to be put on the projecting ends of bars in working areas |
| 12/13/1989 | EP0345907A1 Method and device for building a greenhouse |
| 12/13/1989 | EP0345823A2 Screed rails |
| 12/13/1989 | EP0345254A1 Building profiling tools. |
| 12/05/1989 | US4884384 Arrangement for laying concrete floors |
| 11/30/1989 | WO1989011574A1 Spraying apparatus |
| 11/30/1989 | WO1989011401A1 Base point anchor |
| 11/29/1989 | EP0343309A1 Wire twisting device |
| 11/23/1989 | DE3840319A1 Wire-binding unit |
| 11/23/1989 | DE3815920A1 Apparatus for building up structures continuously |
| 11/16/1989 | DE3815343A1 Device which can be fitted on scaffoldings and is intended for applying compositions |
| 11/16/1989 | DE3815307A1 Vehicle for transporting reinforced-concrete unitised units, e.g. prefabricated garages, which are open at the ends |
| 11/15/1989 | CN2047690U Vibration beam |
| 11/15/1989 | CN2047603U Frequency-increasing adhesive vibrator |
| 11/14/1989 | US4880210 Removable and stackable hoistway door assesmbly |
| 11/14/1989 | US4880038 Wire twisting apparatus |
| 11/14/1989 | US4879859 Method and apparatus for constructing circumferentially wrapped prestressed structures utilizing a membrane |
| 11/07/1989 | US4878327 Corrosion protected tension member for use in prestressed concrete and method of installing same |
| 11/07/1989 | CA1262640A1 Method of placing concrete into a steel encasement |
| 11/02/1989 | WO1989010457A1 Brick laying tools |
| 10/25/1989 | EP0338142A1 Stanchion or post |