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公开(公告)号：US2632492A
公开(公告)日：1953-03-24
申请号：US9756949
申请日：1949-06-07
Applicant: PLACENTINO MICHAEL R
Inventor： PLACENTINO MICHAEL R
CPC classification number: B60C5/04 , B60C19/12 , Y10T152/10702
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