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公开(公告)号：US1478758A
公开(公告)日：1923-12-25
申请号：US54336622
申请日：1922-03-13
Applicant: ROBERT PILSON JAMES , LOWIS ZOLL
Inventor： ROBERT PILSON JAMES , LOWIS ZOLL
IPC: E05F1/10
CPC classification number: E05F1/1008 , E05Y2201/474 , E05Y2201/638 , Y10T16/585
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