СПИСОК патентов США - подгруппа МПК16 H04M3/14


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№ п/п Номер патента Название патента

2017

19560181Communication apparatus and control method for the same

2016

29374452Apparatus and method for detection of off-hook phone in reverse power feeding architecture

2015

39100499Communication apparatus and method with off-hook detection and power supply control

2011

48063965Apparatus and method for eliminating artifacts in active pixel sensor (APS) imagers

2008

57411621Apparatus and method for eliminating artifacts in active pixel sensor (APS) imagers

2005

66934382Method for recognizing an off-hook condition on a single subscriber line with two terminal devices
76930751Method and apparatus for reducing false hook detection

2003

86590973System and method for detecting an off-hook condition

2002

96453017Extended off-hook notification via electronic communications

2000

106035204Method for releasing call in cordless telephone

1999

115987119Apparatus for automatically recovering speech path of telephone terminal and method therefor
125978470Signal-processing method and system for off-hook notification

1998

135764752Off-hook telephone clearing system

1997

145612997Off-hook disconnect and reconnect ringer device
155606593Apparatus and method for automatically returning a telephone set to an on-hook condition
165592529Telephone inadvertent off-hook condition detector

1995

175390249Receiver device for receiving ringing signals in an off-hook line condition

1991

185065424Apparatus for servicing telephones from a remote location
194998271Telephone accessory

1990

204922529Automatic hangup apparatus for restoring service to off-hook telephones

1988

214788712Howler indicator in cordless telephone system
224748657Handset actuated signal intercept

1985

234502139Howler tone sending-out system in time-division electronic exchanges
244501935Detecting a DC nonlinearity terminating a network
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017