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2234832
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Information
Patent Grant
2234832
References
Source
Patent Number
2,234,832
Date Filed
Not available
Date Issued
Tuesday, March 11, 1941
84 years ago
CPC
H04L17/14 - with optical sensing means
H04L17/06 - Contact operating means
US Classifications
178 - Telegraphy
250 - Radiant energy
341 - Coded data generation or conversion
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