| 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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| 01/15/1991 | CA1278932C Apparatus for modifying building blocks |
| 01/10/1991 | WO1991000402A1 Laminated tile product, method for producing the same and method for installing the same |
| 01/08/1991 | US4982923 Device for adjustable mounting of guide rails on a base |
| 01/08/1991 | US4982720 Cutting saw blade |
| 01/08/1991 | US4982531 Method employing abrasive tools for the combined cutting and trimming of glass or crystal articles and an apparatus for carrying out the said method |
| 01/02/1991 | EP0406224A1 Device for the machining of workpieces and mode of application of the device |
| 01/02/1991 | CN1048186A Wet cutting method of prestressed concrete circular hole slab and its device |
| 01/02/1991 | CA1278498C Band sawing machine |
| 01/01/1991 | US4981539 Process for the structural reinforcement of fragile articles made of stone or agglomerates |
| 01/01/1991 | US4981129 Chain saw |
| 12/27/1990 | WO1990015683A1 Hollow drill |
| 12/25/1990 | US4979412 Sawing machine |
| 12/18/1990 | US4978258 For forming an undercut in a borehole |
| 12/13/1990 | DE3918271A1 Mfg. and/or treating concrete block |
| 12/12/1990 | EP0402297A2 Parting-off machine for cutting of flat construction pieces |
| 12/12/1990 | EP0401462A2 Process for making and/or handling concrete blocks |
| 12/12/1990 | EP0401309A1 Chain guide for chain saw |
| 12/12/1990 | CN1047643A Process of efficient cutting and working stone materials |
| 12/11/1990 | US4976251 Tile saw apparatus and method |
| 12/05/1990 | EP0401156A2 Boring device for making undercuttings |
| 12/05/1990 | EP0400511A1 Annular saw blade and annular saw with driving means for a saw blade |
| 12/05/1990 | CN2066802U Magnectic brick cutting device |
| 12/05/1990 | CN2066801U Glass drill head |
| 12/05/1990 | CA2017614A1 Process for the production and/or treatment of concrete blocks |
| 12/04/1990 | US4974907 Pneumatic cutter for concrete and the like |
| 12/04/1990 | US4974498 Synthetic diamond protective coating |
| 12/02/1990 | CA2018029A1 Annular saw blade and annular saw with driving means for a saw blade |
| 11/28/1990 | EP0399164A1 Driving device for bolts anchored by impact with open out sleeve |
| 11/28/1990 | EP0399076A1 Machine for the cutting of granite block or of stone materials into slabs |
| 11/27/1990 | US4972588 Cordless drywall saw |
| 11/22/1990 | EP0398467A2 A slicing and grinding system for a wafer slicing machine |
| 11/20/1990 | US4971486 Undercutting drill |
| 11/20/1990 | US4971022 Cutting chain for aggregate materials |
| 11/15/1990 | WO1990013406A1 Method and apparatus for treating a surface of granite with a high temperature plasma jet |
| 11/15/1990 | DE3915695A1 Laminated fibre reinforced plastics circular saw - includes bolted-on cutters permitting easy replacement |
| 11/15/1990 | DE3915672A1 Fixing hole depth checking-adjusting arrangement gravestones - has inner tube movable within outer tube whose dia. matches bored hole recess dia. |
| 11/14/1990 | EP0397367A1 Ceramic tile gauge |
| 11/14/1990 | EP0397237A1 Method of cleaving a plate of brittle material |
| 11/14/1990 | EP0397236A1 Method of severing a plate of brittle material |
| 11/14/1990 | EP0396854A1 Power pulse generator |
| 11/14/1990 | EP0396711A1 Abrasion-type splitting unit |
| 11/13/1990 | CA1276083C Boom operated demolition apparatus and method of breaking composite material |
| 11/09/1990 | CA2016102A1 Ceramic tile gauge |
| 11/07/1990 | EP0395644A1 Abrasive tool and a method of making said tool |
| 11/06/1990 | US4968101 Vertical asphalt and concrete miller |
| 11/06/1990 | US4967725 Method and apparatus for manufacturing semiconductor wafers and cutting wire apparatus for use therein |
| 11/06/1990 | US4967461 Method for manufacturing and handling thin wafers |
| 10/31/1990 | EP0395610A2 Tool for cutting solid material |
| 10/31/1990 | EP0395335A1 Bit for drilling an undercut hole |
| 10/31/1990 | CN1046489A Oxygen lance method for punching and cutting concrete and the apparatus thereof |
| 10/30/1990 | US4966502 Hollow drilling tool |
| 10/30/1990 | US4965935 Tile cutting table |
| 10/25/1990 | DE3912663A1 Stone slab dressing machine - has photo-scanner linked to cutting head and moving over master plan |
| 10/24/1990 | EP0394188A1 Milling tool |
| 10/24/1990 | EP0393989A1 Rotary cutter wheel |
| 10/23/1990 | US4964475 Drilling device for producing drill holes with undercut |
| 10/18/1990 | WO1990012193A1 Coupling for drilling machine with dust extractor |
| 10/17/1990 | CN1046115A Processing method of granite fired slab |
| 10/16/1990 | US4962967 Stone slotting machine |
| 10/16/1990 | US4962820 Device for producing drill holes having an undercut |
| 10/16/1990 | US4962748 Diamond abrasive saw blade and method of dry sawing concrete |
| 10/11/1990 | DE3911159A1 Coupling for drill pipe with force transmission |
| 10/10/1990 | EP0391683A1 Drilling |
| 10/10/1990 | CN2063475U Concrete cutter |
| 10/09/1990 | US4961334 Modular edge conditioner |
| 10/02/1990 | US4960643 Composite synthetic materials |
| 10/02/1990 | US4960176 Device for cutting, drilling or similar working of rock, ore, concrete or the like |
| 09/27/1990 | DE3909982A1 Drilling device for making cylindrical drill holes in steel-reinforced masonry or masonry penetrated by metal parts |
| 09/27/1990 | DE3908899A1 Frame-saw tightener for the stone industry, with a protective cap for protecting the sealing bellows at the tightening piston |
| 09/26/1990 | CN2062682U Oxozone cutter for concrete |
| 09/25/1990 | US4958467 Boring apparatus and method of modifying concrete blocks |
| 09/25/1990 | CA1274396A1 Abrasive pipe saw |
| 09/19/1990 | EP0387260A1 Sawing machine for cutting blocks of stone or hard material |
| 09/12/1990 | EP0387142A1 Tile cutting machine |
| 09/12/1990 | CN1009537B Pavement and mosonry stone cutter |
| 09/11/1990 | US4956021 Absorption, solvents, adsorption, antisoilants |
| 09/11/1990 | US4955763 Glass drilling machine |
| 09/11/1990 | US4955357 Method and apparatus for cutting polycrystalline silicon rods |
| 09/07/1990 | CA2010295A1 Machine for cutting tiles, particularly sandstone ones |
| 09/05/1990 | EP0385324A2 Method for cutting rod-shaped work pieces into discs using an internal hole saw, and internal hole saw for this purpose |
| 09/05/1990 | EP0385059A2 Drill |
| 09/05/1990 | CN1045055A 钻头 Drill |
| 09/04/1990 | US4953523 Quick release mechanism for the tool of a concrete/asphalt abrader |
| 08/28/1990 | US4952445 Marble tile trim |
| 08/22/1990 | EP0383343A1 Paving slab or paving element made of natural stone, preferably basalt |
| 08/21/1990 | US4950034 Shaft excavation method |
| 08/21/1990 | CA1273082A1 Device for automatically controlling the density and viscosity of the abrasive mixture and the quantity of metallic middlings used in the sawing of granite or hard stone |
| 08/16/1990 | DE4004292A1 Saw-blade for sawing granite - has pivoted teeth which can rotate through small angle |
| 08/16/1990 | DE4003818A1 Chimney passing system through concrete roof - drills holes to pattern to pattern of those in guide member |
| 08/07/1990 | US4945889 Belt-configured saw for cutting slots into stones having a poly-crystalline diamond cutting surface |
| 07/31/1990 | US4944638 Removable spindle for drill heads |
| 07/26/1990 | WO1990008857A1 Cutting apparatus |
| 07/26/1990 | WO1990008243A1 Manhole cutter |
| 07/25/1990 | EP0378964A2 Trepanning tool |
| 07/18/1990 | EP0378252A2 Tool for manufacturing construction elements |
| 07/17/1990 | US4941783 Drilling device |
| 07/17/1990 | CA1271657A1 Road surface layer reproducing machine |
| 07/10/1990 | US4940289 Scabbler for scabbling floors contaminated with hazardous materials |
| 07/10/1990 | US4940039 Cutting tool |
| 07/10/1990 | US4940038 Tile and marble cutting saw apparatus and method |