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经营范围
发明名称
Dip measuring instrument
摘要
申请公布号
US3305929(A)
申请公布日期
1967.02.28
申请号
US19640365875
申请日期
1964.05.08
申请人
SINCLAIR RESEARCH, INC.
发明人
KILMER LAUREN G.
分类号
E21B47/026
主分类号
E21B47/026
代理机构
代理人
主权项
地址
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