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公开(公告)号：US2300615A
公开(公告)日：1942-11-03
申请号：US32229240
申请日：1940-03-05
Applicant: BUDD EDWARD G MFG CO
Inventor： CRET PAUL P , PATTON JOHN W
IPC: B61D37/00
CPC classification number: B61D37/006 , Y10S73/05
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