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| Patents for B21D 9 - Bending tubes using mandrels or the like (1,513) |
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| 05/09/1978 | US4088007 Pipe bending mandrel | | 05/02/1978 | US4086803 Pipe bending mandrel | | 04/25/1978 | US4085608 Return elbow and crossover bender | | 12/06/1977 | US4061005 Method and apparatus for continuous bending of elongated materials | | 09/13/1977 | US4047273 Deflection compensating roll | | 06/14/1977 | US4028926 Handling device for slipping tubes on the mandrel of bending machines | | 06/07/1977 | US4027522 Internal mandrel for use in bending the ends of pipes | | 04/19/1977 | US4018176 Apparatus for spin flanging containers | | 03/01/1977 | US4009601 Method of and apparatus for bending a double pipe | | 02/15/1977 | US4007622 Device for bending thin-walled pipes | | 09/14/1976 | US3979941 Steering means particularly for internal pipe bending mandrels | | 09/07/1976 | US3979231 Method for producing large diameter steel pipes | | 06/22/1976 | US3964290 Internal pipe bending mandrel |
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