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公开(公告)号：US1243513A
公开(公告)日：1917-10-16
申请号：US9933716
申请日：1916-05-23
Applicant: GRUBB REUBEN
Inventor： GRUBB REUBEN
CPC classification number: B60C5/24 , Y10T152/10441 , Y10T152/10567
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