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公开(公告)号：US1406687A
公开(公告)日：1922-02-14
申请号：US48526021
申请日：1921-07-16
Applicant: ROGERS MILTON W
Inventor： ROGERS MILTON W
IPC: B60B21/12
CPC classification number: B60B21/12 , Y10T152/10657
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