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2787689
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Patent Grant
2787689
References
Source
Patent Number
2,787,689
Date Filed
Not available
Date Issued
Tuesday, April 2, 1957
67 years ago
CPC
H04M3/64 - Arrangements for signalling the number or class of the calling line to the operator
H01H9/16 - Indicators for switching condition
H01H50/08 - Indicators Distinguishing marks
US Classifications
200 - Electricity: circuit makers and breakers
335 - Electricity: magnetically operated switches, magnets, and electromagnets
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