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公开(公告)号：US1495961A
公开(公告)日：1924-05-27
申请号：US61932423
申请日：1923-02-15
Applicant: INT PRECIPITATION CO
Inventor： NEWELL MINTON H , EVALD ANDERSON
IPC: B22F9/12
CPC classification number: B22F9/12
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