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发明名称
ELECTRICAL CONTACT DEVICE
摘要
申请公布号
CA313574(A)
申请公布日期
1931.07.21
申请号
CAD313574
申请日期
申请人
BENJAMIN F. LYONS
发明人
WALTER W. ROBINSON
分类号
主分类号
代理机构
代理人
主权项
地址
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