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公开(公告)号：US1406214A
公开(公告)日：1922-02-14
申请号：US6538815
申请日：1915-12-06
Applicant: MEAD MORRISON MFG COMPANY
Inventor： NORRIS ALMON E , JOHN ECKS
IPC: B61D7/30
CPC classification number: B61D7/30
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