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2923069
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Patent Grant
2923069
References
Source
Patent Number
2,923,069
Date Filed
Not available
Date Issued
Tuesday, February 2, 1960
64 years ago
CPC
G09B19/26 - Dot-and dash telegraphic codes
US Classifications
434 - Education and demonstration
174 - Electricity: conductors and insulators
178 - Telegraphy
340 - Communications: electrical
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