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公开(公告)号:US2573729A
公开(公告)日:1951-11-06
申请号:US2931448
申请日:1948-05-26
Applicant: KARL RATH
Inventor: KARL RATH
IPC: G01J1/42
CPC classification number: G01J1/4214
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5.Exposure determining device for photographic cameras having cooperating indicia on camera and film magazine 失效
Title translation: 照相机曝光确定装置,在相机和胶片盒上具有合作标记-
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公开(公告)号:US2564312A
公开(公告)日:1951-08-14
申请号:US9797649
申请日:1949-06-09
Applicant: ROSSMANN PETER F , KARL RATH
Inventor: ROSSMANN PETER F , KARL RATH
IPC: G11B5/633
CPC classification number: G11B5/633
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公开(公告)号:US2479869A
公开(公告)日:1949-08-23
申请号:US2024448
申请日:1948-04-10
Applicant: ROSSMANN PETER F , KARL RATH
Inventor: ROSSMANN PETER F , KARL RATH
IPC: G11B5/633
CPC classification number: G11B5/633
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