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发明名称
ELECTRON TUBE TAPPING DEVICE FOR DEFECT TESTING
摘要
申请公布号
CA461155(A)
申请公布日期
1949.11.15
申请号
CAD461155
申请日期
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
CHARLES A. VOGT
分类号
主分类号
代理机构
代理人
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地址
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