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2547011
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Information
Patent Grant
2547011
References
Source
Patent Number
2,547,011
Date Filed
Not available
Date Issued
Tuesday, April 3, 1951
73 years ago
CPC
H03F1/54 - with tubes only
H03F1/542 - Replacing by standby devices
US Classifications
340 - Communications: electrical
246 - Railway switches and signals
315 - Electric lamp and discharge devices: systems
324 - Electricity: measuring and testing
330 - Amplifiers
379 - Telephonic communications
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