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公开(公告)号：US1899266A
公开(公告)日：1933-02-28
申请号：US54259231
申请日：1931-06-06
Applicant: CONDOR COMPANY
Inventor： FOSTER WALTER F
CPC classification number: E05F5/02 , E05F5/08 , E05Y2201/212 , E05Y2201/264 , E05Y2201/474 , E05Y2201/488 , Y10T16/62
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