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发明名称
Electric door opening device
摘要
申请公布号
US2003533(A)
申请公布日期
1935.06.04
申请号
US19320597100
申请日期
1932.03.07
申请人
FRANK D. HAYES
发明人
GREEN MASON V.
分类号
E05F15/18
主分类号
E05F15/18
代理机构
代理人
主权项
地址
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