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公开(公告)号：US2260246A
公开(公告)日：1941-10-21
申请号：US20209838
申请日：1938-04-14
Applicant: WOODRUFF GEORGE T , JONES IRA B
Inventor： WOODRUFF GEORGE T , JONES IRA B
IPC: B60C23/04
CPC classification number: B60C23/0403 , Y10T137/8326
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