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11.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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14.Camera with photoelectric exposure control having photocell shutters connected to camera adjusting means 失效
Title translation: 具有光电曝光控制的相机,其具有连接到照相机调节装置的光电倍增器-
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公开(公告)号:US2479868A
公开(公告)日:1949-08-23
申请号:US74349047
申请日:1947-04-24
Applicant: ROSSMANN PETER F , KARL RATH
Inventor: ROSSMANN PETER F , KARL RATH
IPC: G11B5/633
CPC classification number: G11B5/633
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17.
公开(公告)号:US2444675A
公开(公告)日:1948-07-06
申请号:US60590845
申请日:1945-07-19
Applicant: KARL RATH
Inventor: KARL RATH
IPC: G01J1/42
CPC classification number: G01J1/4223
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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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20.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
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