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发明名称
ELECTRONIC TUBES
摘要
申请公布号
CA520620(A)
申请公布日期
1956.01.10
申请号
CAD520620
申请日期
申请人
PHILCO CORPORATION
发明人
JOHN W. TILEY
分类号
主分类号
代理机构
代理人
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地址
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