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公开(公告)号：US1393986A
公开(公告)日：1921-10-18
申请号：US42998420
申请日：1920-12-11
Applicant: WALLACE GEORGE T , TWITCHELL JAMES E
Inventor： WALLACE GEORGE T , TWITCHELL JAMES E
IPC: B60C27/06
CPC classification number: B60C27/06 , B60C27/0276 , B60C27/064
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