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Browse by Category: Main > Communications
Class Information
Number: 379/304
Name: Telephonic communications > Centralized switching system > Switching controlled in response to called station addressing signal > Direct control > All relay type
Description: Subject matter in which all switching is performed by electromagnetically controlled contact apparatus.










Patents under this class:

Patent Number Title Of Patent Date Issued
8135118 Communication apparatus and method of controlling same Mar. 13, 2012
6510222 Miniature connector array Jan. 21, 2003
4555593 Electronic telephone relay Nov. 26, 1985











 
 
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