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公开(公告)号：US2539262A
公开(公告)日：1951-01-23
申请号：US70434546
申请日：1946-10-19
Applicant: TIDE WATER ASSOCIATED OIL COMP
Inventor： HUGH MOORE ARTHUR
IPC: B25B13/48
CPC classification number: B25B13/48
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