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发明名称
METHOD OF OPTICALLY MEASURING RELATIVE ANGULAR MOVEMENT
摘要
申请公布号
GB8816199(D0)
申请公布日期
1988.08.10
申请号
GB19880016199
申请日期
1988.07.07
申请人
COAL INDUSTRY (PATENTS) LTD
发明人
分类号
G01C9/06;E21B47/022;G01D5/30
主分类号
G01C9/06
代理机构
代理人
主权项
地址
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