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公开(公告)号：US1694431A
公开(公告)日：1928-12-11
申请号：US28236228
申请日：1928-06-02
Applicant: RUSSELL JOHN F , RUFTY HENRY E
Inventor： RUSSELL JOHN F , RUFTY HENRY E
IPC: E05F15/12
CPC classification number: E05F15/624 , E05Y2201/434 , E05Y2600/46 , E05Y2900/132
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