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公开(公告)号：US1460775A
公开(公告)日：1923-07-03
申请号：US62179723
申请日：1923-02-28
Applicant: WALSH WILLIAM A
Inventor： WALSH WILLIAM A
IPC: B60C17/02
CPC classification number: B60C17/02 , Y10T137/3724 , Y10T137/374 , Y10T152/10594
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