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公开(公告)号：US1385252A
公开(公告)日：1921-07-19
申请号：US39561720
申请日：1920-07-12
Applicant: KEMPER WINDOM L
Inventor： KEMPER WINDOM L
IPC: B60C7/10
CPC classification number: B60C7/102 , Y10T152/10009
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