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发明名称
THERMIONIC CATHODE FOR ELECTRON TUBES
摘要
申请公布号
CA588519(A)
申请公布日期
1959.12.08
申请号
CAD588519
申请日期
申请人
"PATELHOLD" PATENIVERWERTUNGS AND ELEKTRO-HOLDINGA.-G.
发明人
GYSBERT J. EKKERS;ALDO PATRIARCA
分类号
主分类号
代理机构
代理人
主权项
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