| Patents for B23Q 27 - Geometrical mechanisms for the production of work of particular shapes, not fully provided for in another subclass (351) |
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| 11/06/1984 | US4480506 Apparatus for generating lobular polygonal forms |
| 10/23/1984 | CA1176438A1 Machine tools |
| 10/10/1984 | EP0121310A1 Apparatus for forming diverse shapes |
| 10/02/1984 | US4474150 Valve assembly |
| 05/30/1984 | EP0109792A1 Valve assembly and method of machining |
| 04/03/1984 | US4439951 Grinding machine |
| 02/21/1984 | US4432310 Parallel cylinder internal combustion engine |
| 01/05/1984 | WO1984000018A1 Method for manufacturing parts with polygonal inner and/or outer profile and device to implement such method |
| 01/04/1984 | EP0097346A2 Method and apparatus for making work-pieces with an internal or external polygonal surface |
| 11/11/1983 | EP0073227A4 Cutter-holder for turning polygonal surfaces. |
| 11/02/1983 | EP0092634A1 Machine for circumferential machining |
| 10/25/1983 | US4411410 Apparatus for cutting openings in pipes |
| 05/25/1983 | EP0079750A1 Parallel cylinder internal combustion engine |
| 04/13/1983 | EP0076596A2 Revolving cutting tool |
| 03/09/1983 | EP0073227A1 Cutter-holder for turning polygonal surfaces. |
| 03/08/1983 | US4375739 Method for manufacturing hyperbolic surface |
| 02/09/1983 | EP0071407A1 Blind hole anchor nut fastener |
| 09/16/1982 | WO1982003031A1 Cutter-holder for turning polygonal surfaces |
| 08/10/1982 | US4343206 Slide system for machine tools |
| 06/08/1982 | US4333368 Method and apparatus for generating aspherical surfaces of revolution |
| 02/09/1982 | US4314492 Apparatus for the out-of-round machining of workpieces |
| 01/20/1982 | EP0044207A2 Method and apparatus for generating aspherical surfaces of revolution |
| 01/20/1982 | EP0044200A1 Machine tools |
| 12/22/1981 | US4306598 Ellipse cutting machine |
| 09/29/1981 | US4292495 Welding torch weaving device |
| 08/11/1981 | US4282784 Method and lathe for machining out-of-round circumferences |
| 03/03/1981 | CA1096595A1 Method and apparatus for manufacturing parts for rotary fluid machines |
| 01/27/1981 | US4246812 Method and apparatus for boring a tapered, curved I.D. tubular casting mold |
| 06/24/1980 | CA1079940A1 Method and apparatus for lens turning |
| 12/04/1979 | US4176585 Universal panograph pattern |
| 09/04/1979 | CA1061557A1 Pendulum device |
| 02/13/1979 | CA1048311A1 Lathe for generating spherical or aspherical surfaces on workpieces |
| 11/14/1978 | US4124927 Automatic lathe with rotary cutter |
| 09/19/1978 | US4114486 Lathe for generating spherical or aspherical surfaces on workpieces, method for generating aspherical surfaces on workpieces and workpiece having aspherical surface |
| 09/12/1978 | US4112793 Device for cutting ovals in mats or glass sheets |
| 08/29/1978 | CA1037308A1 Method and means for making helical races |
| 04/18/1978 | US4084459 Method and apparatus for lens turning |
| 03/07/1978 | US4077285 Method of and apparatus for machining a contoured surface |
| 01/10/1978 | US4067111 Pendulum device |
| 11/01/1977 | US4056137 Method and apparatus for cutting tenons |
| 10/11/1977 | US4052928 Cam-type gearing and the like |
| 06/14/1977 | US4028992 Method and means for making helical races |
| 04/05/1977 | US4015370 Machine for grinding of peripheral surfaces on work pieces |
| 09/07/1976 | US3978766 Apparatus and method for machining continuous mixer agitators and the like |
| 08/24/1976 | US3975866 Method and apparatus for machining housings for slant axis rotary mechanisms |
| 06/22/1976 | US3964367 Device for machining trochoidal inner walls, especially for the cylinders of Wankel engines |
| 05/25/1976 | US3958471 Method of and apparatus for manufacturing workpieces having polygonyl inner and outer contours |
| 05/11/1976 | US3955325 Abrading apparatus for the housing of a rotary engine |
| 04/13/1976 | US3949643 Profiling device |
| 04/06/1976 | US3948144 Peritrochoid curved surface generating apparatus |
| 01/06/1976 | US3931561 Curve milling or curve grinding machines |