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发明名称
PULSE SIGNALLING SYSTEM
摘要
申请公布号
CA448272(A)
申请公布日期
1948.05.04
申请号
CAD448272
申请日期
申请人
CANADIAN GENERAL ELECTRIC COMPANY
发明人
EVERHARD H. B. BARTELINK
分类号
主分类号
代理机构
代理人
主权项
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