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发明名称
Variable diaphragm for photogram-metric projection instrument
摘要
申请公布号
US3033076(A)
申请公布日期
1962.05.08
申请号
US19580771865
申请日期
1958.11.04
申请人
THE KELSH INSTRUMENT COMPANY, INC.
发明人
KELSH HARRY T.
分类号
G01C11/04
主分类号
G01C11/04
代理机构
代理人
主权项
地址
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