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公开(公告)号：US2198586A
公开(公告)日：1940-04-23
申请号：US11719136
申请日：1936-12-22
Applicant: MCKONE MARTHA W
Inventor： MCKONE MARTHA W
IPC: B60C9/06
CPC classification number: B60C9/06 , Y10S57/902
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