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发明名称
ARRANGEMENT FOR MEASURING RELATIVE DISPLACEMENT UTILIZING RELATIVELY MOVABLE SHUTTERS WHICH CONTROL THE PASSAGE OF MODULATED LIGHT
摘要
申请公布号
US3566140(A)
申请公布日期
1971.02.23
申请号
USD3566140
申请日期
1969.03.26
申请人
AGA AB.
发明人
CARL-ERIK GRANQVIST
分类号
G02B6/00;G01D5/347;G01D5/36;G02B6/04;(IPC1-7):H01J39/12
主分类号
G02B6/00
代理机构
代理人
主权项
地址
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