| Patents for B28D 1 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhere; Machines, devices, tools therefor (14,003) |
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| 01/30/1990 | US4896459 Apparatus for manufacturing thin wafers of hard, non-metallic material such as for use as semiconductor substrates |
| 01/24/1990 | EP0352215A2 Drilling tool |
| 01/24/1990 | EP0351699A2 Core drill bit |
| 01/23/1990 | US4895146 Surgical bone-grinding instrument |
| 01/23/1990 | US4894956 Apparatus and method for slicing a wafer |
| 01/18/1990 | DE3823770A1 Frame-saw blade holder with split holder shank |
| 01/17/1990 | EP0350676A1 Tool for forming groove in brittle object and method of fracturing same |
| 01/17/1990 | EP0350526A1 Non-core drill |
| 01/17/1990 | CN1038784A Method for production of reinforced panels from block of building material, such as stone |
| 01/16/1990 | US4893607 Wire drive apparatus for wire saw |
| 01/16/1990 | US4893411 Power sawblades for abrasive materials |
| 01/10/1990 | EP0349846A1 Core drill bit |
| 01/10/1990 | CN1038614A Tool for grooving in hole |
| 01/09/1990 | US4891887 Hand held drill drive |
| 01/02/1990 | US4890680 Machine for working rock, especially a block drilling machine |
| 12/28/1989 | WO1989012538A1 Tool for preparing joints or channels in a building construction |
| 12/28/1989 | WO1989012537A1 Chain guide for chain saw |
| 12/28/1989 | WO1989008802A3 Process and device for enlarging a chimney |
| 12/27/1989 | EP0347556A1 Drilling tool for manufacturing drilled holes with recesses |
| 12/27/1989 | CN2049996U Hand cutting machine for non-metal brittleness plates |
| 12/26/1989 | US4889675 Method for cutting unhardened concrete with a soft concrete saw |
| 12/20/1989 | EP0347371A1 Crushing tongs for demolishing building structures, especially reinforced-concrete walls |
| 12/20/1989 | EP0347075A2 Asbestos removal system |
| 12/20/1989 | CN2049593U Saw with changeable sawtooth |
| 12/19/1989 | US4887585 Method and apparatus for cutting taps in sewer lines |
| 12/14/1989 | WO1989012141A1 A self-propelled apparatus for cutting asphalt and concrete |
| 12/14/1989 | WO1989011958A1 A method for the production of reinforced panels from a block of building material, such as stone |
| 12/14/1989 | WO1989011953A1 Wear resistant abrasive cutting wheel |
| 12/14/1989 | WO1989010820A3 Tipped cutters |
| 12/13/1989 | CN1006090B Sampling varve for submicro-flow gas and processing |
| 12/12/1989 | US4886040 Method and apparatus for removing concrete coating from a pipe |
| 12/06/1989 | EP0344619A1 A method for the production of reinforced panels from a block of building material, such as stone |
| 11/30/1989 | DE3913379A1 Method and arrangement for non-mechanical destruction of concrete/reinforced concrete and rocks |
| 11/29/1989 | EP0344142A1 Method for the combined cutting and dressing of glassware or crystal-glassware by means of abrasive tools, and device for carrying out the method |
| 11/29/1989 | EP0344121A1 Tool with longitudinal slots at its shank |
| 11/29/1989 | CN2048424U Portable, high efficient, multi-functional working machine for tapestry brick |
| 11/28/1989 | US4883500 Sawblade segments utilizing polycrystalline diamond grit |
| 11/21/1989 | US4881518 Apparatus for manufacturing and handling thin wafers |
| 11/21/1989 | US4881439 Cutting apparatus for sheet material |
| 11/21/1989 | CA1263026A1 Stress resistant abrasive cutting wheel |
| 11/16/1989 | WO1989010820A2 Tipped cutters |
| 11/16/1989 | DE3915368A1 Vorrichtung zum schneiden von platten, kacheln, fliesen o. dgl. Apparatus for cutting slabs, tiles, tiles o. The like. |
| 11/16/1989 | DE3815640A1 Mobile joint cutter |
| 11/16/1989 | DE3815639A1 Mobile joint cutter |
| 11/15/1989 | EP0341942A2 Cutting brittle materials |
| 11/15/1989 | EP0341394A2 Device for enlarging a chimney which is to be lined at the interior by milling and applications |
| 11/14/1989 | US4880335 Method and apparatus for removing concrete coating from pipe |
| 11/09/1989 | DE3819470C1 Stock-removal device |
| 11/09/1989 | DE3814365A1 Coupling, in particular for diamond bit with shank pipe and pipe thread connection |
| 11/08/1989 | EP0340467A2 Safety device for a powered hand tool |
| 11/08/1989 | EP0340340A1 Method for the production of a diamond-core bit |
| 11/02/1989 | WO1989010235A1 Device for cutting stone |
| 11/02/1989 | EP0339777A1 Method and apparatus for cutting a solid block from one face of a workpiece |
| 11/02/1989 | EP0339308A1 Method and device for the artificial aging of concrete blocks, and an artificially aged concrete block |
| 11/02/1989 | EP0339261A2 Device for uncovering the reinforcement rods in concrete piles |
| 11/02/1989 | DE3813472A1 Coupling, in particular for diamond bit with shank pipe and pipe thread connection |
| 10/31/1989 | US4876789 Apparatus for measuring and cutting sheetrock |
| 10/26/1989 | DE3811197A1 Adaptor device for a machine tool guided by hand |
| 10/25/1989 | EP0230429B1 Stone saw |
| 10/25/1989 | CN2046435U Cutter for concrete cored slab |
| 10/25/1989 | CN2046434U Special turning and grinding machine tool for machining cylindrical stone |
| 10/24/1989 | CA1262415A1 Guide pulley base for wire saw |
| 10/24/1989 | CA1262414A1 Wire saw drive apparatus |
| 10/18/1989 | EP0337753A2 Chain saw for cutting aggregate material |
| 10/18/1989 | EP0337278A2 Tile cutting machine |
| 10/18/1989 | EP0262208B1 A device for mounting a rail or the like on a surface |
| 10/18/1989 | CN2046068U Apparatus for producing terrazzo plate by cutting method |
| 10/17/1989 | US4874046 Groove cutter for concrete bores |
| 10/11/1989 | EP0336912A2 Method and apparatus for processing a mineral wool path |
| 10/11/1989 | EP0336253A1 Sawing tool with adapted sawing machine |
| 10/11/1989 | CN2045691U Air entrainment concrete cutting machine |
| 10/10/1989 | US4872289 Cutter |
| 10/05/1989 | DE3807787A1 Method and device for repairing longitudinal seams or longitudinal cracks in roadway pavings |
| 10/04/1989 | EP0334900A1 Undercutting drill. |
| 10/04/1989 | CN1035961A Cage type pulverizer |
| 10/03/1989 | US4871117 Low-contamination method for comminuting solid silicon fragments |
| 09/27/1989 | EP0334831A1 Sawing machine with a vertical saw frame |
| 09/27/1989 | EP0334807A2 Untercutting drilling device |
| 09/27/1989 | EP0334806A1 Rock core bit |
| 09/26/1989 | US4869227 Process and device for producing deep cuts in concrete or similar material |
| 09/26/1989 | CA1261818A1 Apparatus for obtaining ring-shaped cavities in the bottom of drilled holes made in any type of medium |
| 09/26/1989 | CA1260822A1 Device for the automatic and continuous correction of the centres of oscillation in a pendulant frame for the cutting of marbles, granites and hard stones |
| 09/21/1989 | WO1989008802A2 Process and device for enlarging a chimney |
| 09/21/1989 | WO1989008525A1 Method and apparatus for cutting a solid block from one face of a workpiece |
| 09/21/1989 | DE3908153A1 Internally effective cutting disc |
| 09/19/1989 | US4867618 Removable spindle for drill heads |
| 09/14/1989 | DE3844520A1 Method and apparatus for splitting up semiconductor ingots into semiconductor wafers with at least one plane surface |
| 09/14/1989 | DE3807225A1 Holder for a drilling tool |
| 09/14/1989 | DE3807136A1 Process for repairing chimneys, and apparatus for carrying out the individual process steps |
| 09/13/1989 | EP0332328A1 Mist-spouting type drilling device |
| 09/06/1989 | CN2043915U Counter-cut machine for stone materials with circular saw blades of double-diamond |
| 08/31/1989 | DE3805197A1 Free-wheeling diamond bit shank |
| 08/30/1989 | EP0329915A1 Shaft for drilling tools, eccentrically arranged and rotatably mounted |
| 08/29/1989 | US4860723 Ceramic tile spacing gauge and tile holder |
| 08/29/1989 | US4860722 Diamond segments and inserts |
| 08/29/1989 | US4860721 Super abrasive cutting saw |
| 08/24/1989 | WO1989007690A1 Apparatus for reflex-percussive cutting of concrete etc. |
| 08/24/1989 | WO1989007515A1 Adjustable support for cutting apparatus |
| 08/24/1989 | DE3804377A1 Device for producing wall recesses |
| 08/24/1989 | DE3802721C1 Method of manufacturing thin, surface-treated natural or artificial stone plates |