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经营范围
发明名称
Vapor-electric device
摘要
申请公布号
US2172221(A)
申请公布日期
1939.09.05
申请号
US19380222799
申请日期
1938.08.03
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
PAKALA WILLIAM E.
分类号
H01J13/02
主分类号
H01J13/02
代理机构
代理人
主权项
地址
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