Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1976-08-05
1977-08-16
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
B21D 1704
Patent
active
040417476
ABSTRACT:
Apparatus for grooving pipe extending longitudinally axially comprises:
REFERENCES:
patent: 425516 (1890-04-01), Leavy
patent: 2925116 (1960-02-01), Eberle
patent: 3015502 (1962-01-01), Frost et al.
patent: 3541826 (1970-11-01), Halliburton
patent: 3903722 (1975-09-01), Thau et al.
Collins Machinery Corporation
Haefliger William W.
Larson Lowell A.
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