Protection system
United States Patent 2875344
US Patent References:
Photoelectric timer for roentgen photography
- - 2401289
Semiconductor photosensitive device
- - 2650258
Chi-ray detection
- - 2706792
Photoelectric timer for roentgen photography
- - 2401289
Semiconductor photosensitive device
- - 2650258
Chi-ray detection
- - 2706792
Inventors:
Grinerich, Joseph J.
Publication Date:
02/24/1959
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Export Citation:
Assignee:
GEN ELECTRIC
Primary Class:
Other Classes:
378/118, 378/117
International Classes:
H05G1/44; H05G1/54; H05G1/70; H05G1/00