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经营范围
发明名称
Recording system
摘要
申请公布号
US1856699(A)
申请公布日期
1932.05.03
申请号
US19270216532
申请日期
1927.08.31
申请人
WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY
发明人
EVANS ROBERT D.;WAGNER CHARLES F.;GRISCOM SAMUEL B.
分类号
G01R13/04
主分类号
G01R13/04
代理机构
代理人
主权项
地址
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