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发明名称
Door control
摘要
申请公布号
US2329476(A)
申请公布日期
1943.09.14
申请号
US19410376296
申请日期
1941.01.28
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
LIVINGSTON JOHN T.
分类号
A62C2/12
主分类号
A62C2/12
代理机构
代理人
主权项
地址
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