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经营范围
发明名称
Electrical system
摘要
申请公布号
US2531895(A)
申请公布日期
1950.11.28
申请号
US19450592778
申请日期
1945.05.09
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
SHAFER ORVILLE B.;SULLIVAN JOHN J.
分类号
H01J17/30;H01J17/56;H03K17/52
主分类号
H01J17/30
代理机构
代理人
主权项
地址
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