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1.Apparatus for photoelectrically measuring the position of a scale marker 失效
Title translation: 用于光电测量刻度标记位置的装置公开(公告)号:US3305691A
公开(公告)日:1967-02-21
申请号:US48243965
申请日:1965-08-25
Applicant: LEITZ ERNST GMBH
Inventor: FROMUND HOCK
IPC: G01D5/38
CPC classification number: G01D5/38
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2.
公开(公告)号:US3198061A
公开(公告)日:1965-08-03
申请号:US2042360
申请日:1960-04-06
Applicant: LEITZ ERNST GMBH
Inventor: FROMUND HOCK
CPC classification number: G01B21/065 , G01D5/38
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公开(公告)号:US3254227A
公开(公告)日:1966-05-31
申请号:US21941762
申请日:1962-08-27
Applicant: LEITZ ERNST GMBH
Inventor: FROMUND HOCK
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4.Photometric apparatus compensated for fluctuations in light source intensity 失效
Title translation: 光度仪器补偿光源强度的波动公开(公告)号:US2939361A
公开(公告)日:1960-06-07
申请号:US58356656
申请日:1956-05-08
Applicant: LEITZ ERNST GMBH
Inventor: FROMUND HOCK , KREIS WETZLAR
IPC: G01J1/42
CPC classification number: G01J1/4228
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