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发明名称
Improved gauging apparatus
摘要
申请公布号
GB392554(A)
申请公布日期
1933.05.17
申请号
GB19310031858
申请日期
1931.11.17
申请人
ELECTRICAL RESEARCH PRODUCTS INC.
发明人
分类号
主分类号
代理机构
代理人
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