| 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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| 07/03/1979 | CA1057646A1 Device for cutting in particular reinforced concrete piles |
| 06/26/1979 | CA1057101A1 Rotary cutter for a road planer |
| 06/19/1979 | CA1056662A1 Method and apparatus for consolidating blocks of marble and similar natural stones |
| 06/19/1979 | CA1056624A1 Drilling assembly |
| 06/13/1979 | EP0002291A2 Hydraulic core drill apparatus |
| 06/13/1979 | EP0002265A2 Machine for sawing blocks of solid, especially stony materials, such as marble, granite and the like |
| 05/22/1979 | US4155596 Terrazzo floor surfacing machine |
| 05/08/1979 | US4153121 Fluid operated undercutter |
| 04/17/1979 | US4149513 Deep texture hammer |
| 04/03/1979 | US4147491 Apparatus for forming simulated old brick |
| 03/27/1979 | US4146098 Masonry cutting tool |
| 03/20/1979 | US4145086 Method and machine for digging ditch |
| 03/20/1979 | US4144867 Concrete pile-cutting machine |
| 03/20/1979 | CA1051042A1 Method and device for breaking hard compact material |
| 02/27/1979 | US4141592 Method and device for breaking hard compact material |
| 02/20/1979 | US4140347 Fluid operated wall groove cutter |
| 02/20/1979 | US4140036 Apparatus for cutting pipe insulation |
| 02/06/1979 | US4138304 Semiconductors, pelletization |
| 02/06/1979 | CA1047895A1 Rotary cutting equipment |
| 02/06/1979 | CA1047894A1 Apparatus for sawing stone |
| 01/16/1979 | US4134459 Rotary cutting equipment |
| 01/09/1979 | CA1045989A1 Hydraulic system for rock breaker |
| 12/26/1978 | US4131103 Apparatus for sawing stone |
| 12/12/1978 | US4128971 Abrasive drill |
| 12/05/1978 | US4128136 Drill bit |
| 11/28/1978 | CA1043136A1 Combination tool |
| 11/07/1978 | US4124015 Device for cutting in particular reinforced concrete piles |
| 10/31/1978 | US4123190 Apparatus for preparing corrugated sheets automatically |
| 09/19/1978 | US4114773 Feeding device of a concrete block splitting apparatus |
| 09/19/1978 | US4114322 Abrasive member |
| 09/19/1978 | US4114226 Wear resistant alpha alumina article useful to clean magnetic tape and the process of producing said |
| 09/05/1978 | US4111270 Drilling assembly |
| 09/05/1978 | CA1037930A1 Tile cutters |
| 08/29/1978 | US4109635 Machine grooved joint on hollow concrete cylinders |
| 08/22/1978 | US4107800 Combination drilling and wrenching tool |
| 08/08/1978 | US4104938 Apparatus for kerfing gypsum wallboard |
| 07/04/1978 | CA1034111A1 Hammer drills |
| 06/27/1978 | US4097246 Method of making an abrasive wire for sawing stone |
| 06/27/1978 | US4096749 Core sampling device |
| 05/30/1978 | US4092393 Method of making blocks and plates from pieces of marble and other natural stones |
| 05/30/1978 | US4091882 Drilling tool |
| 05/09/1978 | US4089031 Safety protection circuit |
| 05/09/1978 | US4087913 Utility fixture locator and cutter |
| 04/18/1978 | US4084569 Tile cutter |
| 04/18/1978 | US4084354 Process for slicing boules of single crystal material |
| 03/28/1978 | US4080952 Rim pump |
| 03/21/1978 | US4079796 Cutting machine and augering tool |
| 03/14/1978 | US4078622 Road surface recessing device |
| 03/14/1978 | US4078539 Rock gripper assembly |
| 03/07/1978 | US4077301 Apparatus for cutting expanded foam blocks to provide a predetermined surface configuration thereon |
| 02/14/1978 | US4073094 Method and apparatus for repairing a crack in a pane of plate glass |
| 01/17/1978 | US4068648 Brick saw apparatus |
| 01/10/1978 | US4067312 Automatic feedback control for wire saw |
| 01/10/1978 | US4067311 Method for sawing hard material |
| 12/20/1977 | US4063982 Method of making a composite surface elements of stone and lightweight sheet material |
| 12/06/1977 | US4061126 Ceramic tile cutting apparatus |
| 11/22/1977 | US4059279 Hollow percussion drill rod with seal for cleaning fluid inlet tube |
| 11/22/1977 | US4059035 Apparatus for cutting pipe insulation |
| 11/15/1977 | US4058176 Tool and method for drilling a hole with an increased cross-sectional area |
| 11/01/1977 | US4056152 Drill bit for reinforced concrete |
| 10/25/1977 | US4055160 Table saw |
| 10/18/1977 | US4054179 Stone and concrete cutting machine |
| 10/04/1977 | US4052584 Method and apparatus for cutting insulating material |
| 09/20/1977 | US4048977 Flute breaker |
| 09/13/1977 | US4047828 Core drill |
| 08/30/1977 | US4044749 Concrete removal tool |
| 08/23/1977 | US4043311 Jig saw blade with cooling channel |
| 08/16/1977 | US4041928 Masonry saw |
| 08/16/1977 | US4041650 Material removal tool with multiple cutting edges |
| 08/09/1977 | US4040668 Groove cutting apparatus |
| 08/02/1977 | US4038962 Automatic power controller for a wire saw |
| 07/12/1977 | US4034816 Demolition tool |
| 06/21/1977 | US4030566 Hydraulic system for rock breaker |
| 06/21/1977 | US4030195 Scoring device with edge guide |
| 06/14/1977 | US4029160 Drilling machine |
| 06/07/1977 | US4027647 Planing and cutting tool |
| 05/31/1977 | US4026262 Tile cutter |
| 04/12/1977 | US4016856 Wire cutting machine |
| 03/22/1977 | US4013809 Vacuum, impregnation with resin, hardening |
| 03/08/1977 | US4010807 Tool for forming a hole for a fastening element |
| 02/08/1977 | US4006936 Rotary cutter for a road planer |
| 01/25/1977 | US4004569 Method and apparatus for removing set mortar from recovered building bricks |
| 12/28/1976 | US3999620 Core barrel |
| 12/28/1976 | US3999619 Core barrel |
| 12/21/1976 | US3998201 Concrete breaker |
| 10/19/1976 | US3986913 Cutting circle around crack, plugging, curable cement |
| 09/28/1976 | US3982521 Heavy duty jig saw |
| 09/21/1976 | US3981540 Rock breaking apparatus |
| 09/14/1976 | US3980341 Breaking up of concrete surface layers or the like |
| 09/14/1976 | US3979829 Apparatus for preparing a tooth stump for a crown |
| 09/07/1976 | US3978842 Masonry block cutter |
| 08/31/1976 | US3977276 Method for producing a forming tool having a sintered web-like cutting edge |
| 08/24/1976 | US3976045 Stone cutting machine |
| 07/06/1976 | US3967687 Curb drain hole drill |
| 06/29/1976 | US3965510 Combination drilling and wrenching tool |
| 06/22/1976 | US3965395 Power interrupter for electrical devices |
| 06/15/1976 | US3963846 Marble-faced composite surface element |
| 05/18/1976 | US3957307 Rough cutter mining tool |
| 05/18/1976 | US3957028 Wire-type cutting machine |
| 05/18/1976 | US3956858 Flexible hand held abrading tool |