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2764634
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Information
Patent Grant
2764634
References
Source
Patent Number
2,764,634
Date Filed
Not available
Date Issued
Tuesday, September 25, 1956
67 years ago
CPC
H04Q3/42 - Circuit arrangements for indirect selecting controlled by common circuits
G11B5/00 - Recording by magnetisation or demagnetisation of a record carrier Reproducing by magnetic means Record carriers therefor
H04M3/64 - Arrangements for signalling the number or class of the calling line to the operator
H04M15/04 - Recording calls , or communications in printed, perforated or other permanent form
H04M15/10 - Metering calls from calling party
US Classifications
379 - Telephonic communications
360 - Dynamic magnetic information storage or retrieval
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