| 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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| 06/17/1997 | US5638967 Vehicle with a built-on swiveling mast and a frame support |
| 06/12/1997 | DE19614109C1 Profile to hold cladding film at door and window openings |
| 06/12/1997 | DE19612110C1 Special twisting tongs for twisting reinforcement wires in steel concrete structures |
| 06/12/1997 | DE19545578A1 Lift device for heavy structural parts |
| 06/11/1997 | EP0778378A1 Security device for roof openings and method for manufacturing the security device |
| 06/10/1997 | US5636704 Ascender for a roofing safety system |
| 06/04/1997 | EP0681634B1 Improved roof anchor |
| 06/04/1997 | CN2255471Y 混凝土振动器 Concrete vibrator |
| 06/04/1997 | CN1151197A Scaffolding assembly |
| 06/04/1997 | CN1151129A Wire tying tool with drive mechanism |
| 06/03/1997 | US5635097 Rebar retention apparatus |
| 06/03/1997 | US5634301 Stud wall raising apparatus |
| 05/29/1997 | WO1997019238A1 Device for lifting a framework and any construction supported thereon |
| 05/28/1997 | DE19543662A1 Scaffolding for catcher net during overhead power line mast maintenance |
| 05/28/1997 | CN2254929Y Machine for milling trough and drilling |
| 05/27/1997 | US5632088 Cable stripper device |
| 05/22/1997 | DE19543629A1 Aligning and fixing secondary building structures |
| 05/22/1997 | DE19543230A1 Hanging and holding scaffolding on outside walls of buildings |
| 05/22/1997 | DE19542793A1 Connector providing fluid-tight seal for pipelines e.g. carrying and placing concrete |
| 05/22/1997 | DE19542562A1 Swivel joint for building or industrial materials between pump and discharge |
| 05/21/1997 | CN2254458Y 自动抹灰机 Automatic plastering machine |
| 05/20/1997 | US5630515 Adjustable vehicle-carrying frame |
| 05/15/1997 | DE19645759A1 Socket-shaped anchoring component |
| 05/15/1997 | DE19541745A1 Vertical rail for use as detachably fixed stop between building roof and floor |
| 05/14/1997 | EP0597094B1 Sheet stretcher |
| 05/13/1997 | US5629064 Mask used for grouting tile |
| 05/13/1997 | US5628119 Adjustable framing jig |
| 05/09/1997 | WO1997016285A1 Truss assembly table |
| 05/07/1997 | EP0771916A1 Temporary frame structure for construction of building |
| 05/07/1997 | EP0771593A2 Method and device for uncovering and cleaning steel wire strands |
| 05/07/1997 | EP0771385A1 A method and an accessory for mounting building frames such as window frames in mounting openings |
| 05/07/1997 | CN2253757Y 抹墙机 Plastering machine |
| 05/06/1997 | US5625993 Concrete structure having load transferring insert and method for making same |
| 05/02/1997 | EP0578809B1 Method and device for arranging building panels |
| 04/30/1997 | DE19627188A1 Markierungselement zur Markierung des Meterrisses in Bauwerken Marker to label the meter crack in buildings |
| 04/30/1997 | DE19542590C1 Identifier, especially for concrete anchor |
| 04/30/1997 | DE19539748A1 Stressed concrete structural part |
| 04/30/1997 | DE19539505A1 Levelling element for concrete surface e.g. on flat roof of building |
| 04/30/1997 | DE19539504A1 Transport and laying anchor for hollow and filigree walls |
| 04/30/1997 | CN2253367Y Plastering apparatus |
| 04/30/1997 | CN1148652A Device for anchoring near surface of building member |
| 04/29/1997 | US5624628 Method of introducing a casting compound into a hollow space |
| 04/29/1997 | US5624241 Flexible hydraulic pump and agitator apparatus |
| 04/29/1997 | US5624147 Lifting ring |
| 04/29/1997 | US5623804 Concrete structure having load transferring insert and method for making same |
| 04/24/1997 | WO1997014859A1 Marker element for marking the meter line in buildings |
| 04/23/1997 | EP0768926A1 Wire tying tool with drive mechanism |
| 04/23/1997 | CN2252845Y Concrete slurry water reclaiming appts. |
| 04/22/1997 | US5622354 Post plumbing device |
| 04/22/1997 | US5622237 Portable hoist system |
| 04/22/1997 | US5621976 For use by a construction contractor |
| 04/17/1997 | WO1997013940A1 Apparatus and method for removing structural parts of a building without contaminating adjacent areas |
| 04/17/1997 | WO1997013939A1 Lifting anchor for embedment in concrete members |
| 04/16/1997 | EP0768113A1 Process and device for manufacturing fine cement/ultrafine binder suspensions |
| 04/16/1997 | EP0767857A1 Spacing member |
| 04/10/1997 | CA2186300A1 Spray machine with a driven rotor unit |
| 04/10/1997 | CA2186299A1 Sealing plate for sealing a rotor unit |
| 04/10/1997 | CA2186298A1 Spray machine with driven rotor unit |
| 04/09/1997 | EP0767119A1 Disk seal for sealing a rotary valve |
| 04/09/1997 | EP0767118A1 Spraying machine with a driven rotor |
| 04/09/1997 | EP0766771A1 Safety device for preventing objects dropping from roofs |
| 04/09/1997 | EP0766769A1 Scaffolding assembly |
| 04/09/1997 | CN1147045A Improvements in vibrators and machines equipped therewith |
| 04/08/1997 | US5619128 Stud sensor with over-stud miscalibration via circuit which stores an initial calibration density, compares that to a current test density and outputs result via indicator |
| 04/03/1997 | DE19544542C1 Gripping jaw assembly lifting several packs of concrete roofing tiles at once |
| 04/03/1997 | DE19536701A1 Tightening parallel components in prestressed concrete building structure |
| 04/03/1997 | DE19536700A1 Method of stretching steel bars, wires or flex |
| 04/02/1997 | EP0765977A2 Variable embeddment anchor and method |
| 04/02/1997 | CN2251012Y Reinforcing bar tool anchor capable of automatically opening and closing |
| 04/02/1997 | CN2251011Y Leveller |
| 04/02/1997 | CN2251010Y Direct-driven concrete vibrating spear |
| 04/02/1997 | CN2251009Y Electromagnetic single-complex step driving frequency modulation compactor |
| 04/01/1997 | US5616272 Re-bar alignment and support clip |
| 03/27/1997 | DE19531552A1 Reinforcement locks for walls, floors and staircases |
| 03/26/1997 | EP0686224B1 Large manipulator, especially for self-propelled concrete pumps |
| 03/25/1997 | US5613543 Temporary protective covering system |
| 03/25/1997 | US5613530 Hand held twist tie apparatus |
| 03/25/1997 | US5613336 Protective assembly for reinforcement bars |
| 03/20/1997 | DE19604514C1 Roof-girder installation equipment in enclosed spaces |
| 03/20/1997 | DE19534140A1 Covering system for goods etc. |
| 03/19/1997 | EP0715673B1 Large manipulator, especially for self-propelled concrete pumps, and method for operating it |
| 03/18/1997 | US5611369 Concrete hydration system |
| 03/13/1997 | DE19618138A1 Room divider system for building undergoing restoration |
| 03/12/1997 | EP0761907A1 Masking foil |
| 03/12/1997 | CN2249318Y Open-type oil-way whole hydraulic control device for concrete pump |
| 03/06/1997 | WO1997008093A1 Device for connecting a finished concrete part to the load-carrying means of a hoist |
| 03/05/1997 | EP0704013B1 A device for securing superimposed reinforcing rods |
| 02/27/1997 | WO1997007304A1 A machine for joining together elongated objects |
| 02/27/1997 | WO1997007286A1 Concrete-finishing apparatus |
| 02/27/1997 | CA2229475A1 Concrete-finishing apparatus |
| 02/27/1997 | CA2228309A1 A machine for joining together elongated objects |
| 02/26/1997 | CN2248214Y Pulling-out device with hydraulic pump |
| 02/26/1997 | CN1143990A Method and device for installing light-weight panel units |
| 02/25/1997 | US5605415 Screed bar attachment |
| 02/25/1997 | US5605398 Flap for cement truck back |
| 02/19/1997 | CN2247701Y Multifunctional wall cutter |
| 02/19/1997 | CN1143148A Pile forming method by site pumping concrete |
| 02/18/1997 | US5603428 Joint compound container |
| 02/06/1997 | WO1997004180A1 Method of thawing frozen ground |
| 02/05/1997 | EP0757143A1 Transportable device to bind together reinforcing steel |