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2113669
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Information
Patent Grant
2113669
References
Source
Patent Number
2,113,669
Date Filed
Not available
Date Issued
Tuesday, April 12, 1938
86 years ago
CPC
H01J29/16 - Incandescent screens
H01J31/14 - Magic-eye or analogous tuning indicators
US Classifications
313 - Electric lamp and discharge devices
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