| 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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| 01/07/1988 | EP0231362A4 Hoist coupling. |
| 01/07/1988 | DE3621482A1 Clamp usable especially in the building trade |
| 01/07/1988 | DE3621467A1 Retaining unit for fitting a protective railing |
| 01/05/1988 | US4716703 Method for mounting a roof, floor or similar structure and a structure adapted to be mounted according to the method |
| 12/29/1987 | US4715163 Apparatus for mortaring large-format bricks into a wall |
| 12/29/1987 | CA1230870A1 Device for centering and guiding a roller supporting a heavy component |
| 12/26/1987 | CN87204070U Raincover for unfired bricks |
| 12/26/1987 | CN87202789U Gripper block for hoisting pipes |
| 12/23/1987 | EP0249737A2 Reinforcement binding machine |
| 12/23/1987 | DE3633339A1 Grippers for blocks, in particular for large-format lightweight blocks |
| 12/17/1987 | DE3630520C1 Verfahren zur Verhuetung von Farbauftragungen auf Flaechen aus Natur- und Kunststein Procedures for preventing ting paintings on the Areas of natural and artificial stone |
| 12/15/1987 | US4712943 Method and machine for levelling concrete when casting large concrete areas |
| 12/15/1987 | US4712697 Lightweight tower crane boom for conveying pumped concrete |
| 12/12/1987 | CN86210093U Electric and magnetic vibrating spear for inserting in concrete |
| 12/05/1987 | CN86207779U Concrete vacuum dewatering absorption pad without filter |
| 12/05/1987 | CN86203931U Plug-in static pressure type anchor-pole installing device in pipe |
| 12/03/1987 | DE3540913A1 Plastering-mortar dispenser |
| 12/01/1987 | US4709526 Mortar application template |
| 11/25/1987 | CN87206441U Rope implement |
| 11/24/1987 | US4708532 Apparatus for storing a concrete feeding hose in a rock bolting device |
| 11/24/1987 | US4708288 Method and apparatus for pneumatically discharging hydromechanically conveyed hydraulic building material for underground operations |
| 11/24/1987 | US4707955 Screed rails |
| 11/19/1987 | DE3616642A1 Transportation vehicle, in particular for prefabricated garages |
| 11/18/1987 | CN86209550U Safety device of cableway basket |
| 11/17/1987 | US4706551 For use in a hazardous environment |
| 11/11/1987 | CN86209683U Prestressed stretching device suitable for box steel beam |
| 11/10/1987 | US4705312 Insulated building block handling tool |
| 11/10/1987 | US4704829 Building truss clamp devices |
| 11/10/1987 | US4704754 Tension arch structure |
| 11/10/1987 | CA1228998A1 Metal strand having improved corrosion resistance and/or bonding characteristics, particularly for prestressing concrete |
| 11/04/1987 | EP0243855A2 Device for the temporary protection of windows and doors against pollution during the construction work |
| 11/03/1987 | US4703595 Coupler for hanging precast concrete panels from a hoist |
| 10/27/1987 | US4702045 Anchor for concreting into heavy loads |
| 10/27/1987 | US4702044 Modified arch support |
| 10/22/1987 | WO1987006292A1 Concrete distribution device |
| 10/22/1987 | DE3613392A1 Masonry-wall guide device for various masonry structures comprising artificial blocks |
| 10/21/1987 | EP0241554A1 Process for producing mortar and method for applying the same |
| 10/21/1987 | EP0241486A1 Safety apparatus for roofers |
| 10/21/1987 | EP0241466A1 A weather protecting device for stands |
| 10/21/1987 | CN86102571A Method for brick wall construction with movable formwork |
| 10/20/1987 | US4701071 For screeding a width of concrete confined by forms |
| 10/15/1987 | DE3622203A1 Method for producing a tunnel lining and device for carrying out the method |
| 10/14/1987 | EP0240801A2 Screed for plaster or cement |
| 10/14/1987 | CN87202876U Large-sized shed for construction of coke oven |
| 10/14/1987 | CN87202033U Sticking-proof rotor for concrete injector |
| 10/13/1987 | US4699558 Mobile cargo loader for lifting and transporting building modules and the like |
| 10/13/1987 | US4699245 Safety device for working at great heights |
| 10/08/1987 | DE3611431A1 Scaffolding supporting apparatus for bridging-over footpaths |
| 09/30/1987 | EP0238688A1 Device for generating vibrations |
| 09/29/1987 | US4696372 Portable step and carrying device for stud walls |
| 09/23/1987 | CN86210109U 振捣器 Vibrators |
| 09/22/1987 | US4695178 Joint for reinforcing bar employed in concrete construction |
| 09/22/1987 | US4694933 Self-propelled scaffold for buildings and rope tensioning means, as well as process for the construction and/or for the servicing of high buildings |
| 09/22/1987 | CA1227236A1 Detachable gallery for use on buildings or the like |
| 09/17/1987 | DE3644532A1 Method for producing a tunnel lining from lining concrete and apparatus for carrying out the method |
| 09/17/1987 | DE3608324A1 Apparatus for installing door cases in the openings of buildings, preferably pivot doors in reinforced-concrete prefabricated garages |
| 09/16/1987 | EP0236911A2 Transporting, mixing and conveying combination device for the preparation and maintenance of the mixing quality of pulpy compounds particularly of concrete |
| 09/16/1987 | EP0236363A1 Concrete reinforcing tying tool |
| 09/15/1987 | US4693044 Devices for prestressing concrete having stretched sinuous cables and the methods for implementing same |
| 09/08/1987 | CA1226425A1 Process for tying crossing elements |
| 09/03/1987 | DE3606530A1 Apparatus which can be used on building sites for attaching guard-rail boards or the like |
| 09/02/1987 | EP0234569A2 Device for making metal wire fastenings, particularly for use in the field of building |
| 09/02/1987 | EP0234048A1 Method and apparatus for manufacturing brick wall elements |
| 09/01/1987 | US4690328 Spraying machine |
| 09/01/1987 | US4689889 Device for supporting a building line reference |
| 08/27/1987 | DE3626340C1 Apparatus for guiding the stressing reinforcements of a stressing-reinforcement cluster between anchor plate and stressing jack |
| 08/26/1987 | CN87100262A Reinforcing rod holder for use in joining cast concrete work |
| 08/25/1987 | US4688667 Attachment for cement chute |
| 08/25/1987 | CA1225815A1 Construction element for thermal insulation in buildings |
| 08/25/1987 | CA1225814A1 Support shoe |
| 08/20/1987 | DE3603592A1 Load-bearing device for raising perforated concrete-covering panels |
| 08/19/1987 | EP0232392A1 Process and device for connecting at least two rods. |
| 08/19/1987 | CN86206879U Diamond piercer for construction engineering |
| 08/18/1987 | US4687374 Method of and apparatus for concrete tunnel lining |
| 08/18/1987 | US4687174 Device for centering and guiding a roller supporting a heavy component |
| 08/13/1987 | DE3623631C1 Distributor mast |
| 08/13/1987 | DE3604224A1 Apparatus for laying large-format masonry blocks |
| 08/13/1987 | DE3604130A1 Mechanical bricklayer's aid |
| 08/12/1987 | EP0231362A1 Hoist coupling |
| 08/11/1987 | US4685493 Reinforcing bar binding device |
| 08/06/1987 | DE3603390A1 Anchorage of a stressed tensioning member arranged outside the cross-section of a structure |
| 08/05/1987 | EP0230593A1 Automatic installation for lining the inner wall of a vessel |
| 08/05/1987 | EP0230542A1 Method and apparatus for introducing and embedding in concrete an anchor bolt in a concrete element |
| 07/29/1987 | EP0230206A1 Reinforcement-iron for use in joining cast concrete work |
| 07/29/1987 | EP0229776A1 An automatic apparatus for strapping elongated superposed bodies. |
| 07/28/1987 | US4682926 Ceiling panel placing machine |
| 07/28/1987 | US4682896 Device for generating vibrations |
| 07/23/1987 | DE3634568A1 Tensioning element for connecting prefabricated concrete compound units |
| 07/23/1987 | DE3601633A1 Measuring device as auxiliary means when fitting wall claddings comprising profiled boards or panels |
| 07/23/1987 | DE3601404A1 Apparatus for laying blocks, in particular vertically perforated bricks |
| 07/23/1987 | DE3601256A1 Apparatus for conveying construction materials |
| 07/23/1987 | DE3601086A1 Storage and transportation guard for a mounting groove |
| 07/22/1987 | CN86203252U Hultipurpose hammer for erecting architectural formwork and framework |
| 07/22/1987 | CN86201853U 自浮式混凝土振捣器 Self-floating concrete vibrators |
| 07/21/1987 | US4681290 Apparatus and method of shoring masonry, stone, concrete and other materials over openings in buildings |
| 07/16/1987 | DE3700159A1 Method and apparatus for constructing a main drain |
| 07/16/1987 | DE3600738A1 Aid for laying paving stones |
| 07/16/1987 | DE3600547A1 Process and device for producing and conveying a construction material |
| 07/14/1987 | US4679362 Void plug lift insert assembly for a cast concrete product |
| 07/08/1987 | CN86201362U Decorative calciferous plastics board installation machine and nail |