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Browse by Category: Main > Communications
Class Information
Number: 379/36
Name: Telephonic communications > Free calling from paystation
Description: Subject matter including a terminal, normally requiring payment for usage, which has provision for limited usage without payment.










Patents under this class:

Patent Number Title Of Patent Date Issued
8600007 Systems, methods, and computer readable media for providing toll-free service in a telecommunications network Dec. 3, 2013
8078161 Millimeter wave communication system Dec. 13, 2011
6807564 Panic button IP device Oct. 19, 2004
6216161 System for determining whether to connect a terminal to a service provider according to information stored in an information provider for the terminal Apr. 10, 2001
4926469 Pay station telephone call routing apparatus May. 15, 1990
4794642 Call screening in a public telephone station Dec. 27, 1988
4768223 Public telephone set with internal charge processing Aug. 30, 1988
4759050 Intelligent toll telephone system and method Jul. 19, 1988
4685120 Electronic trigger switch for maintenance termination unit Aug. 4, 1987
4638121 Telephone pay station Jan. 20, 1987
4595983 Central office powered credit only telephone paystation Jun. 17, 1986
4139736 Central office coin repeater modification circuit Feb. 13, 1979
4086439 Class of line identifier apparatus and method therefor Apr. 25, 1978
4063036 Coin telephone system having restricted coin-free dialing capability Dec. 13, 1977
3992588 Multiple digit dialing module Nov. 16, 1976
3947643 Method of providing dialtone first on step by step telephone systems Mar. 30, 1976











 
 
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