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1784825
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Patent Grant
1784825
References
Source
Patent Number
1,784,825
Date Filed
Not available
Date Issued
Tuesday, December 16, 1930
94 years ago
CPC
H04B3/144 - fixed equalizers
US Classifications
379 - Telephonic communications
333 - Wave transmission lines and networks
381 - Electrical audio signal processing systems and devices
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