| 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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| 05/13/1981 | EP0028418A1 Method and apparatus for sawing stones and marble |
| 05/06/1981 | EP0027958A1 Vacuum-operated cutting tool and system therefor |
| 04/28/1981 | CA1099917A1 Fluid operated wall groove cutter |
| 04/21/1981 | US4263240 Apparatus and methods for forming simulated old brick |
| 04/21/1981 | US4262966 Road surface removing machine |
| 04/14/1981 | US4261781 Process for forming compound semiconductor bodies |
| 04/14/1981 | US4261618 Device for breaking ice and compacted snow on road surfaces |
| 03/31/1981 | US4258808 Rock drill |
| 03/31/1981 | CA1098355A1 Pavement cutting machine |
| 03/24/1981 | CA1097970A1 Scabbler bits |
| 03/18/1981 | EP0025421A2 A tool mounting and a cutter drum for earth excavating machines |
| 03/17/1981 | US4256078 Brick finishing machine |
| 03/03/1981 | CA1096849A1 Rock splitting attachment for a breaking hammer |
| 02/24/1981 | CA1096278A1 Wear resistant alpha alumina article |
| 02/17/1981 | US4250863 Cement block splitter |
| 02/03/1981 | US4248369 Laser cutting of ceramic tubing |
| 01/28/1981 | EP0022822A1 Roller cutter |
| 01/27/1981 | CA1094428A1 Method for the production of slabs of marble or similar stony material |
| 01/20/1981 | CA1094049A1 Drill bit for rock drilling |
| 01/07/1981 | EP0020346A1 Pounder units |
| 12/11/1980 | WO1980002704A1 Scabblers |
| 12/02/1980 | US4236356 Cutting saw and concrete groover |
| 11/26/1980 | EP0019419A1 Method of and apparatus for cutting stone panels |
| 11/18/1980 | US4233954 Concrete pile cutting device |
| 11/12/1980 | EP0018362A1 Scabbler bits |
| 11/11/1980 | US4232904 Method and apparatus for deep mining using chain driven in fixed direction |
| 10/07/1980 | US4226223 Machine for sawing blocks of solid, especially stony materials, such as marble, granite and the like |
| 10/07/1980 | US4226153 Compensating glass scoring head |
| 10/07/1980 | CA1086994A1 Combination drilling and wrenching tool |
| 10/01/1980 | EP0016539A1 An impact roller and a method of imparting impact blows cyclically to a surface |
| 09/30/1980 | US4225187 Scabbler bit floor surfacing machine |
| 09/23/1980 | CA1086101A1 Portable core drill cutter for hard brittle sheets |
| 09/17/1980 | EP0015769A1 Circular saws |
| 09/16/1980 | US4222687 Apparatus for boring sewer pipe opening in manhole base |
| 09/09/1980 | US4221434 Roadway breaker plate for a planar apparatus |
| 09/03/1980 | EP0014824A1 Process for making a composite semiconductor body and semiconductor body so produced |
| 09/03/1980 | EP0014776A1 Rock cutter jib |
| 08/19/1980 | CA1084172A1 Process for slicing boules of single crystal material |
| 08/05/1980 | CA1083015A2 Apparatus for sawing stone |
| 07/29/1980 | CA1082411A1 Method for making blocks and plates from pieces of marble and other natural stones |
| 07/10/1980 | WO1980001394A1 Roller cutter |
| 07/10/1980 | WO1980001367A1 Pounder units |
| 06/25/1980 | EP0012233A1 Perforating tool for tiles or the like |
| 06/24/1980 | US4209272 Apparatus and method of forming holes in plate glass |
| 06/24/1980 | US4208843 Grinding attachment for porcelain bodies |
| 06/17/1980 | US4208229 System for repairing panes of glass |
| 06/17/1980 | US4208154 Core drill |
| 06/03/1980 | US4205728 Suction attachment for a drilling tool |
| 05/28/1980 | EP0011318A2 Saw for vertically cutting marble, granite and other hard stones |
| 05/28/1980 | EP0011196A1 Insulation pipe jacket and method for its manufacture |
| 05/27/1980 | US4204714 Pavement cutting machine with pad to stabilize and brake machine |
| 05/20/1980 | US4203414 Stone cutting apparatus |
| 05/20/1980 | US4203262 Abrasive drill |
| 05/06/1980 | US4201104 Glass cutter |
| 04/15/1980 | US4197828 Apparatus for cutting concrete columns |
| 04/15/1980 | US4197645 Drill head and bone drill |
| 04/01/1980 | US4195758 Apparatus for separating snapstrates into individual hybrid substrates |
| 03/25/1980 | US4194322 Constant force sheet glass cutting drill assembly |
| 03/19/1980 | EP0008622A1 Drilling tool for making undercuttings |
| 03/18/1980 | US4193638 Multiple tip cutting bit for rotary drum-type cutter |
| 03/11/1980 | US4192282 Tile cutter |
| 03/04/1980 | US4191159 System for slicing silicon wafers |
| 03/04/1980 | CA1072862A1 Epoxy bond diamond saw |
| 02/26/1980 | US4190293 Rock splitting attachment for a breaking hammer |
| 02/19/1980 | US4189015 Drill bits for obtaining core samples |
| 02/19/1980 | US4188934 Step safety groover apparatus |
| 02/19/1980 | US4188696 Abrading tool |
| 02/05/1980 | US4186968 Roadway pavement planing machine |
| 01/29/1980 | US4185609 Band type lapidary saw |
| 01/29/1980 | US4185350 Scarifying attachment for floor machine |
| 01/29/1980 | CA1070653A1 Concrete removal tool |
| 01/22/1980 | US4184719 Machine rails and carriages |
| 01/22/1980 | US4184472 Method and apparatus for slicing crystals |
| 01/22/1980 | CA1070096A1 Apparatus to drill and saw corrugated sheets |
| 01/09/1980 | EP0006253A1 Reciprocating marble, granite or other hardstone saw |
| 01/01/1980 | US4181115 Power control of a stone cutting machine having cutting chains |
| 12/25/1979 | US4180047 Above and below water and land pile cutting apparatus and method |
| 12/25/1979 | US4179966 Sensor for determining band saw deflection and for guiding the band saw blade |
| 12/12/1979 | EP0005878A2 Improvements in endless rotating blades for band-saws |
| 12/11/1979 | US4177789 Method for the production of slabs of marble or similar stony material |
| 11/28/1979 | EP0005453A1 A lever mechanism, particularly applied to stone cutting machine tools, having a variable leverage |
| 11/27/1979 | US4175788 Pavement cutting machine |
| 11/20/1979 | CA1066606A1 Apparatus and process for splitting minerals using a frame cutter |
| 11/14/1979 | EP0005347A1 Attachment for a breaking hammer |
| 11/06/1979 | CA1065741A1 Apparatus for sawing stone |
| 10/23/1979 | US4171657 Numerically-controlled form-cutting machine |
| 10/16/1979 | US4171147 Flywheel for a construction machine |
| 10/04/1979 | WO1979000771A1 Scabbler bits |
| 10/02/1979 | US4169976 Process for cutting or shaping of a substrate by laser |
| 10/02/1979 | CA1063315A1 Kerfed gypsum wallboard |
| 09/25/1979 | US4168753 Tool for introducing self-tapping dowels |
| 09/18/1979 | US4168026 Apparatus for breaking an optical fibre |
| 09/11/1979 | CA1062241A1 Fluid operated undercutter |
| 09/04/1979 | CA1061624A1 Groove cutting apparatus |
| 08/28/1979 | US4165839 Method for disintegrating mica flakes and apparatus used therefor |
| 08/14/1979 | US4164102 Process for the manufacture of a ceramic axial turbine wheel |
| 08/07/1979 | US4163622 Drilling machine |
| 07/31/1979 | CA1059426A1 Cutter wire and cushion block assembly for a brick-cutting machine |
| 07/26/1979 | WO1979000471A1 Method for blasting rock |
| 07/17/1979 | US4161167 Lap cutting blades |