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2827625
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Information
Patent Grant
2827625
References
Source
Patent Number
2,827,625
Date Filed
Not available
Date Issued
Tuesday, March 18, 1958
66 years ago
CPC
H04M3/64 - Arrangements for signalling the number or class of the calling line to the operator
G08B5/22 - using electric transmission using electro-magnetic transmission
H01H50/08 - Indicators Distinguishing marks
US Classifications
324 - Electricity: measuring and testing
335 - Electricity: magnetically operated switches, magnets, and electromagnets
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