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经营范围
发明名称
PHOTO-ELECTRIC RELAY
摘要
申请公布号
CA352327(A)
申请公布日期
1935.08.13
申请号
CAD352327
申请日期
申请人
THE CANADIAN GENERAL ELECTRIC COMPANY
发明人
WILLIAM D. COCKRELL
分类号
主分类号
代理机构
代理人
主权项
地址
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