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公开(公告)号：US1555420A
公开(公告)日：1925-09-29
申请号：US58025922
申请日：1922-08-07
Applicant: KNOX
Inventor： KNOX WILLIAM J , CALVIN BROWN JASPER
IPC: E05F13/04
CPC classification number: E05F11/54 , E05F13/04 , E05Y2201/676 , E05Y2800/00 , E05Y2900/132
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