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| Patents for B21D 25 - Working sheet metal of limited length by stretching, e.g. for straightening (421) |
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| 12/04/1984 | US4485659 Apparatus for adjustably locking the movable counter gripping head of a sheet or section stretcher | | 07/17/1984 | US4459838 Gripping head of a sheet stretcher with a centering device | | 07/03/1984 | US4457159 Sheet metal pull clamp | | 06/12/1984 | US4453394 Sheet metal clamping apparatus | | 05/15/1984 | CA1167210A1 Method of preparing clad steels | | 11/09/1983 | EP0093415A1 Apparatus for producing endless metal hoops of a drive belt in a continuously variable transmission | | 03/22/1983 | CA1143266A1 Vehicle body clamp | | 07/06/1982 | US4337636 Vehicle securing device for frame straightening and repairing apparatus | | 04/21/1982 | EP0049871A2 Procedure for constructing a ship's hull and apparatus for the production of ship hull profiles | | 04/13/1982 | US4324125 Auto body clamp | | 02/16/1982 | US4315424 Vehicle body clamp | | 09/15/1981 | CA1108939A1 Method and means for processing metal | | 02/03/1981 | US4248078 Automobile body clamp | | 07/08/1980 | US4211102 Method and means for processing metal sheets | | 05/23/1978 | US4090550 Lead acid battery grid casting system installation and technique | | 03/07/1978 | US4077813 Method of producing complex aluminum alloy parts of high temper, and products thereof | | 03/08/1977 | US4011429 Hot stretch-wrap forming with resistance heating | | 11/09/1976 | US3990288 Stretch-draw metal forming | | 10/19/1976 | US3986746 Clamp | | 05/11/1976 | US3955249 Clamping device | | 04/06/1976 | US3948071 Tension control for stretch-forming machine |
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