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公开(公告)号：US1300980A
公开(公告)日：1919-04-15
申请号：US24960518
申请日：1918-08-13
Applicant: DOUX GEORGE A LE
Inventor： DOUX GEORGE A LE
CPC classification number: B60C19/122 , Y10T152/10171 , Y10T152/10243 , Y10T152/1072
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