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公开(公告)号：US1268256A
公开(公告)日：1918-06-04
申请号：US7213016
申请日：1916-01-14
Applicant: LEYH HENRY
Inventor： LEYH HENRY
CPC classification number: F16M11/10 , E03C1/322 , E03C2201/90
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