| 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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| 05/20/1992 | CN1061259A Rock breaker for secondary breaking mine rock |
| 05/20/1992 | CN1061181A Vevice for producing drilled holes with undercut |
| 05/13/1992 | EP0484647A1 Device for drilling holes with an undercut |
| 05/13/1992 | EP0456692A4 Cutting apparatus |
| 05/13/1992 | CN2104109U Electroplating saw slice for diamond |
| 05/12/1992 | US5112165 Tool for cutting solid material |
| 05/12/1992 | US5111622 Slicing and grinding system for a wafer slicing machine |
| 05/06/1992 | CN2103422U Drill for drilling hole on glass |
| 05/06/1992 | CN2103421U Diamond drill bit |
| 05/06/1992 | CN2103420U Single-beam suspension hand-feed device for cutting stone materials |
| 05/06/1992 | CN2103419U Stone sawing machine capable of lifting and falling car |
| 04/29/1992 | EP0482218A1 Process for the directed destruction of monolithic objects |
| 04/29/1992 | CN2102835U Multifunction porcelain slice cutting machine |
| 04/28/1992 | US5107937 Channelling a mineral body |
| 04/23/1992 | DE4108689A1 Glass or ceramic plate scoring stencil - for breaking rectangular plate corners to various shapes |
| 04/22/1992 | CN2102196U Hole puncture device |
| 04/22/1992 | CN2102195U Electroplate diamond wire saw |
| 04/22/1992 | CN2102194U Reciprocating stone sawing machine |
| 04/21/1992 | US5106165 Fragmentation apparatus |
| 04/15/1992 | EP0480263A1 Core drill bit |
| 04/15/1992 | CN2101573U Hand hollow drill |
| 04/15/1992 | CN1060331A Dry hollow diamond drilling bit |
| 04/14/1992 | US5104195 Self-propelled apparatus for cutting asphalt and concrete |
| 04/14/1992 | US5103705 Eccentrically arranged radial boring tool apparatus |
| 04/09/1992 | DE4129214A1 Artificial stone paving blocks - are subjected to ageing process and are made of sand and cement with colouring agent |
| 04/08/1992 | EP0479585A1 Mist-spouting type drilling device |
| 04/07/1992 | CA1298494C Method and apparatus for making an undercut drilled hole in a fixed base |
| 04/01/1992 | EP0477253A1 Hollow drill. |
| 03/31/1992 | US5099820 Abrasion-type splitting unit |
| 03/26/1992 | DE4029656A1 Cutter crown for use with saw blades on wood or stone - incorporates cutters toothed along back edge kept in place by spring clip |
| 03/25/1992 | EP0476496A1 Process for fabrication of a bimetallic casting and a wear resisting part according to said process |
| 03/25/1992 | CN2099661U Vertical belt-type stone sawing machine with double blade cutting |
| 03/20/1992 | WO1992005014A1 Abrasive tool |
| 03/19/1992 | WO1992001542A3 Cutting tool |
| 03/19/1992 | DE4029280A1 Boring tool for ducting in concrete - forms shoulder in concrete, as well as through opening, for use with secret joints |
| 03/17/1992 | US5096352 Diamond coated fasteners |
| 03/17/1992 | US5096344 Drill bit having bulb-like shank enlargements to reduce jamming |
| 03/17/1992 | US5096262 Device for enlarging a chimney |
| 03/12/1992 | DE4028830A1 Drilling and cutting tool - is of variable dia. and is designed for working in concrete and similar materials |
| 03/11/1992 | EP0474591A2 Subcalibre shaft with central drillholder |
| 03/11/1992 | EP0474446A2 Abrasive cutting apparatus including inverted cutting chain with inward facing cutting elements |
| 03/11/1992 | EP0474329A2 Method and machine for slicing and grinding wafers |
| 03/05/1992 | WO1992003269A1 A device for material removing processing of a material layer |
| 03/05/1992 | DE4027287A1 Producing wall recesses for installation of electrical sockets |
| 03/05/1992 | CA2050445A1 Abrasive cutting apparatus including inverted cutting chain with inward facing cutting elements |
| 03/04/1992 | EP0473035A2 Device for production of cavities in walls |
| 03/04/1992 | CN2097731U Cutting saw blade for stone |
| 03/03/1992 | US5092717 Device for making a drilled hole with an undercut |
| 03/03/1992 | US5092716 Drill and method for using the same |
| 03/03/1992 | US5092658 Apparatus for surface profiling |
| 02/26/1992 | EP0471692A1 Method and apparatus for treating a surface of granite with a high temperature plasma jet. |
| 02/25/1992 | US5090848 Device for producing drilled holes with undercut |
| 02/20/1992 | WO1992002345A1 Chisel for dust-free chasing of brick structures |
| 02/19/1992 | CN1058743A Drill bit for producing cylindrical drilled holes |
| 02/19/1992 | CN1058741A Cutting method and apparatus |
| 02/12/1992 | EP0470354A1 Drill to make cylindrical holes |
| 02/11/1992 | US5086961 Pipe severing method and apparatus |
| 02/11/1992 | US5086750 Skid plate for concrete saw |
| 02/07/1992 | CA2048412A1 Drill bit having bulb-like shank enlargements to reduce jamming |
| 02/06/1992 | WO1992001841A1 Concrete pile cutter |
| 02/06/1992 | WO1992001542A2 Cutting tool |
| 02/06/1992 | WO1991017033A3 Apparatus and method for cutting unhardened concrete |
| 02/06/1992 | DE4024399A1 Drilling tool with hardened head - is formed as forward tapered truncated cone with grooves for removal of waste |
| 02/05/1992 | EP0470046A1 Drilling device with suction cleaner |
| 02/05/1992 | EP0469272A1 Process and apparatus for working road surfaces |
| 02/05/1992 | CN1015351B Lubricating liquid for cutting and working stone materials |
| 02/04/1992 | US5085008 Apparatus and method for cutting and grinding masonry units |
| 01/29/1992 | EP0468214A1 Cutting insert utilizing superabrasive compacts |
| 01/28/1992 | US5084604 Method of severing a plate of brittle material |
| 01/28/1992 | US5083839 Apparatus for grooving or grinding pavement |
| 01/26/1992 | CA2047780A1 Cutting tool |
| 01/26/1992 | CA2046768A1 Cutting insert utilizing superabrasive compacts |
| 01/23/1992 | DE4023099A1 Machine for cutting hard brittle material - has circular saw-blades mounted on beam which is supported on gantry |
| 01/22/1992 | EP0467019A1 Device for cutting work pieces of hard and brittle material |
| 01/22/1992 | EP0466702A1 Coupling for drilling machine with dust extractor. |
| 01/22/1992 | CN1057983A Method for making diamond saw disc and belt saw blade |
| 01/22/1992 | CN1015311B Tool for grooving in hole |
| 01/21/1992 | US5082070 Hollow drill bit |
| 01/16/1992 | DE4021797A1 Band saw for working stone - is for cutting curves and has leaders close to each other in area of cut |
| 01/14/1992 | US5080085 Machine for cutting granite block or stone materials into slabs |
| 01/08/1992 | EP0464668A1 Tensioning device for an inner diameter saw blade and its use for sawing rods, in particular from semiconductor material, into wafers |
| 01/08/1992 | EP0464364A1 Saw buckle for tensioning frame saw blades for sawing stone blocks |
| 01/08/1992 | CN2092421U Sawing arrangement for the semifinished marble plate |
| 01/07/1992 | US5078540 Asphalt pavement milling machine and cutter drum therefor |
| 01/07/1992 | US5078219 Concave drag bit cutter device and method |
| 01/07/1992 | US5078119 Chain saw cutting assembly |
| 01/02/1992 | DE4020276A1 Producing circular or part-circular cuts in building material - involves diamond rope saw and involves boring central hole and two further holes indicating periphery of circle |
| 01/02/1992 | DE4020242A1 Electric wall socket aperture drilling device - has diamond cutting crown around central drill bit and selective hammer drill operating mode |
| 12/31/1991 | US5076743 Device for drilling undercuts |
| 12/31/1991 | US5076374 Drilling device with an impact-rotation tool |
| 12/27/1991 | EP0462485A2 Improved flighting section and tooth holder |
| 12/24/1991 | US5074276 Slicing method by a slicing machine |
| 12/24/1991 | US5074045 Tool |
| 12/22/1991 | CA2045228A1 Curb cutting system |
| 12/19/1991 | DE4019300A1 Sawing stone slabs using scanner spaced from saw blade - scans marked out contour to be sawn and supplies control for sawing equipment |
| 12/18/1991 | EP0461951A1 Abrasive cutting element and process to manufacture such an element |
| 12/12/1991 | WO1991016184A3 Measuring and cutting apparatus |
| 12/11/1991 | CN1056835A Cutting machine for round pile made of reinforced concret |
| 12/04/1991 | CN1056647A Methods for manufacturing composite surface elements |
| 12/03/1991 | US5069584 Hollow drilling tool |