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2899586
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Information
Patent Grant
2899586
References
Source
Patent Number
2,899,586
Date Filed
Not available
Date Issued
Tuesday, August 11, 1959
65 years ago
CPC
H01J17/22 - Means for obtaining or maintaining the desired pressure within the tube
H01J17/54 - having one or more control electrodes
US Classifications
313 - Electric lamp and discharge devices
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