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| Patents for B21H 7 - Making articles not provided for in groups , e.g. agricultural tools, dinner forks, knives, spoons (1,122) |
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| 08/12/1980 | US4216667 Method of forming a taper leaf | | 08/05/1980 | US4215558 Process of manufacturing a taper leaf spring and its device | | 06/25/1980 | EP0012382A1 Rolling mill for manufacturing finned tubes | | 12/25/1979 | US4179911 Y and T-finned tubes and methods and apparatus for their making | | 09/25/1979 | US4168618 Y and T-finned tubes and methods and apparatus for their making | | 06/05/1979 | CA1055740A1 Mobile forming machine with embossing rolls | | 04/17/1979 | US4150279 Ring rolling methods and apparatus | | 03/06/1979 | US4142392 Internally groove forming apparatus for heat exchanging pipes | | 12/12/1978 | US4128933 Process of making metallic non-skid studs for tires | | 09/19/1978 | US4114415 Profile plano-type knurling machine | | 09/12/1978 | CA1038145A1 Method for providing improved nucleate boiling surfaces | | 02/21/1978 | US4074556 Apparatus for roll working | | 06/14/1977 | US4028924 Apparatus for cross-rolling wire leads | | 05/31/1977 | US4025995 Linear motion ball bearing assembly and ball conforming shaft | | 05/03/1977 | US4020666 Mobile forming machine with embossing rolls | | 01/25/1977 | US4004442 Machine for longitudinal multipass knurling of profiles | | 11/02/1976 | US3988914 Isothermal metal forming apparatus | | 11/02/1976 | US3988913 Isothermal metal forming apparatus | | 10/05/1976 | US3983734 Method of and apparatus for shaping metal billets | | 08/03/1976 | US3972212 Progressive knurl holder | | 05/04/1976 | US3953996 Spark wheels, method of manufacturing spark wheels, and dies for use therein | | 03/16/1976 | US3944782 Isothermal metal forming |
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