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发明名称
Door operation and control
摘要
申请公布号
US2578909(A)
申请公布日期
1951.12.18
申请号
US19480036990
申请日期
1948.07.03
申请人
NATIONAL PNEUMATIC CO., INC.
发明人
TURNER WILLIAM C.
分类号
E05F15/06
主分类号
E05F15/06
代理机构
代理人
主权项
地址
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