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公开(公告)号：US2521149A
公开(公告)日：1950-09-05
申请号：US78417047
申请日：1947-11-05
Applicant: GLENN L MARTIN CO
Inventor： BUTLER EDWIN I , MADSEN WILLIAM N , TIDRICK KENNETH H
IPC: B60C25/132
CPC classification number: B60C25/132
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