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发明名称
Coating composition for electronemitting elements
摘要
申请公布号
US1939075(A)
申请公布日期
1933.12.12
申请号
US19270158827
申请日期
1927.01.03
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
MCCUILOCH LEON
分类号
H01J9/04
主分类号
H01J9/04
代理机构
代理人
主权项
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