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公开(公告)号：US1438257A
公开(公告)日：1922-12-12
申请号：US45624921
申请日：1921-03-28
Applicant: MUNDELL RALPH R
Inventor： MUNDELL RALPH R
IPC: B60C5/10
CPC classification number: B60C5/10 , Y10T152/10612
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