| Patents for B23B 41 - Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor (5,345) |
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| 05/27/1980 | US4204783 Machine for cutting holes with annular cutters |
| 04/15/1980 | US4198181 Apparatus for drilling holes in "H" beams |
| 03/25/1980 | US4194322 Constant force sheet glass cutting drill assembly |
| 03/19/1980 | EP0008622A1 Drilling tool for making undercuttings |
| 02/26/1980 | US4190386 Method of producing holes free of accretions in circuit boards made of plastic |
| 12/18/1979 | US4179230 Multiple spindle drilling machine for wide flange beams |
| 12/18/1979 | US4179229 Multiple spindle drilling machine for wide flange beams |
| 12/12/1979 | EP0006058A1 Drilling unit for steel products |
| 08/28/1979 | US4165948 Drilling and boring machine |
| 08/07/1979 | US4163623 Multiple spindle drilling machine for wide flange beams |
| 07/24/1979 | US4162134 Apparatus for adjusting vertical position of drills in multiple spindle drilling machine |
| 07/24/1979 | CA1058918A1 Drilling holes in pressurized pipes |
| 06/19/1979 | CA1056624A1 Drilling assembly |
| 04/17/1979 | US4149819 Multiple spindle drilling machine for landslide protection wide flange beams |
| 04/03/1979 | US4147460 Method for piercing doubling plate for H-beam and tool for processing doubling plate for H-beam |
| 01/02/1979 | US4132494 Align boring machine |
| 09/05/1978 | US4111588 Drilling holes in pressurized pipes |
| 09/05/1978 | US4111270 Drilling assembly |
| 08/29/1978 | CA1037512A1 Tapping t for plastic pipe |
| 08/29/1978 | CA1037377A1 Chipless shell cutter for large diameter plastic pipe |
| 08/29/1978 | CA1037297A1 Copper tube service valve |
| 08/22/1978 | US4108564 Drilling device with tool carrier supported by a carriage displaceable in drilling direction |
| 07/04/1978 | US4098556 Hole making position control unit with a marked plate for a hole making machine |
| 06/06/1978 | US4093393 Tapping machine |
| 02/28/1978 | US4076038 Tapping tee cutter having relieved sidewall |
| 12/20/1977 | US4063844 Tapping T for plastic pipe |
| 12/06/1977 | US4061064 Apparatus for forming holes in the flanges of structural members |
| 11/15/1977 | US4058176 Tool and method for drilling a hole with an increased cross-sectional area |
| 11/08/1977 | US4057357 Chipless shell cutter for large diameter plastic pipe |
| 10/04/1977 | US4052132 Method and apparatus for drilling fine holes in frangible workpieces |
| 08/09/1977 | US4040763 Method and fixture for reaming piston pin bushings in connecting rods |
| 06/21/1977 | US4030853 Drill apparatus |
| 06/14/1977 | US4029427 Apparatus for positioning tools |
| 04/12/1977 | US4017201 Means for renovating worn cylindrical bearing surfaces |
| 04/05/1977 | US4015457 Interlockable sliders |
| 11/02/1976 | US3989724 Tetrahydropyran-2-ols |
| 09/21/1976 | US3981605 X-Y table for machining |
| 08/31/1976 | US3977805 Tool bar holder |
| 08/31/1976 | US3977804 Multiple spindle drilling machine for wide flange beams |
| 05/04/1976 | US3954347 Drilling machine |
| 04/20/1976 | US3951563 Manufacture of vehicle disc wheels |
| 04/06/1976 | US3948282 Method and device for attaching shut-off control valve to distributing water pipe such as service pipe without stopping passage of water therethrough |
| 03/23/1976 | US3945750 Boring machine for work pieces of large diameter |
| 03/16/1976 | US3944379 Cutting apparatus |
| 01/20/1976 | US3933170 Apparatus for securing a line tap valve to the exterior of a tubing line |