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21.Multiple light baffle brightness meter for photoelectric exposure determining devices 失效
Title translation: 用于光电曝光确定装置的多光挡板亮度计公开(公告)号:US2444674A
公开(公告)日:1948-07-06
申请号:US51011043
申请日:1943-11-13
Applicant: KARL RATH
Inventor: KARL RATH
IPC: G01J1/42
CPC classification number: G01J1/4209
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24.System of arc suppression for electrical switches and circuit breakers 失效
Title translation: 电气开关和断路器的电弧抑制系统公开(公告)号:US3278801A
公开(公告)日:1966-10-11
申请号:US18326662
申请日:1962-03-28
Applicant: KARL RATH
Inventor: EMILIEN CHAUVINEAU JEAN
IPC: H01H9/54
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公开(公告)号:US3117277A
公开(公告)日:1964-01-07
申请号:US15677261
申请日:1961-12-04
Applicant: KARL RATH
Inventor: DE MAGONDEAUX LEO
IPC: G01S13/75
CPC classification number: G01S13/753
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公开(公告)号:US2548847A
公开(公告)日:1951-04-10
申请号:US1161848
申请日:1948-02-27
Applicant: ROSSMANN PETER F , KARL RATH
Inventor: ROSSMANN PETER F , KARL RATH
IPC: E05F11/48
CPC classification number: E05F11/481 , E05Y2201/49 , E05Y2900/55 , Y10T74/18088 , Y10T74/18152
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27.Extinction type exposure meter with automatic eye sensitivity compensation 失效
Title translation: 具有自动眼睛灵敏度补偿的消光式曝光仪-
28.Photoelectric camera exposure control apparatus having planetary gears and concentric camera lens 失效
Title translation: 具有行星齿轮和同心相机镜头的光电相机曝光控制装置公开(公告)号:US2467946A
公开(公告)日:1949-04-19
申请号:US64807846
申请日:1946-02-16
Applicant: ROSSMANN PETER F , KARL RATH
Inventor: ROSSMANN PETER F , KARL RATH
IPC: G03B7/06
CPC classification number: G03B7/06
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