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发明名称
Door operating device
摘要
申请公布号
US2138521(A)
申请公布日期
1938.11.29
申请号
US19350043376
申请日期
1935.10.03
申请人
CHARLES E. MARSHALL
发明人
ELLIS CHARLES A.
分类号
E05F15/12
主分类号
E05F15/12
代理机构
代理人
主权项
地址
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