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公开(公告)号：US1468221A
公开(公告)日：1923-09-18
申请号：US60895222
申请日：1922-12-26
Applicant: HARRY E WILCOX , RALPH D WILCOX
Inventor： WILL CARL H
IPC: B60C7/24
CPC classification number: B60C7/24 , Y10T152/10009
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