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发明名称
Optical system for observing displacement or deflection in connection with measuring instruments
摘要
申请公布号
US2038914(A)
申请公布日期
1936.04.28
申请号
US19340722566
申请日期
1934.04.26
申请人
CLARK TEMPLETON JAMES
发明人
TEMPLETON JAMES CLARK
分类号
G02B23/00
主分类号
G02B23/00
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