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发明名称
INDIRECTLY HEATED CATHODES
摘要
申请公布号
CA551640(A)
申请公布日期
1958.01.14
申请号
CAD551640
申请日期
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
WILLIAM A. BILLINGS;WALTER W. WRIGHT;ALBERT T. WATTS
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