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3089131
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Information
Patent Grant
3089131
References
Source
Patent Number
3,089,131
Date Filed
Not available
Date Issued
Tuesday, May 7, 1963
61 years ago
CPC
H04M3/64 - Arrangements for signalling the number or class of the calling line to the operator
G08B5/30 - with rotating or oscillating members
US Classifications
340 - Communications: electrical
335 - Electricity: magnetically operated switches, magnets, and electromagnets
341 - Coded data generation or conversion
377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems
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