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公开(公告)号:US1779017A
公开(公告)日:1930-10-21
申请号:US17540627
申请日:1927-03-14
Applicant: ATLAS DROP FORGE CO
Inventor: THOMAS SHAW
IPC: B21D11/16
CPC classification number: B21D11/16
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公开(公告)号:US1553638A
公开(公告)日:1925-09-15
申请号:US66493023
申请日:1923-09-26
Applicant: ATLAS DROP FORGE CO
Inventor: THOMAS SHAW
IPC: B21D11/16
CPC classification number: B21D11/16
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