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公开(公告)号：US2691206A
公开(公告)日：1954-10-12
申请号：US29413352
申请日：1952-06-18
Applicant: GLENN L MARTIN CO
Inventor： KAUTZ RAYMOND W
IPC: B23D53/00
CPC classification number: B23D53/026 , B23D55/02 , Y10T83/654 , Y10T83/6545 , Y10T83/712 , Y10T83/7145
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