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经营范围
发明名称
Welded joint
摘要
申请公布号
GB698426(A)
申请公布日期
1953.10.14
申请号
GB19500029013
申请日期
1950.11.27
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
分类号
C03C27/02;H01J9/26
主分类号
C03C27/02
代理机构
代理人
主权项
地址
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