H04Q5/02

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№ п/п	Номер патента	Название патента
2012
1	8331931	System and method for cordless handset registration
2003
2	6594688	Dedicated echo canceler for a workstation
3	6539086	System and method for completing two calls using analog interface to telephone network
2002
4	6427007	System and method for completing a call while at least one call is established using analog interface to telephone network
5	6411695	System and method for completing two calls using analog interface to telephone network
2001
6	6263063	System and method for provisioning an extra line on demand and for selectively connecting calls with a plurality of devices
1996
7	5544235	Identification of called directory number at multiple directory number per line premises prior to ringing signal reception
1993
8	5253289	Terminal connection device
1992
9	5142569	Apparatus for selectively enabling subscriber device to respond to ringing signal in dependence upon ringing cadence
10	5140630	Added main line apparatus
1988
11	4741024	Selective ringing circuit for a telephone
1987
12	4701949	Frequency responsive party telephone line selection apparatus and method
13	4645877	Interface for connecting standard telephones to party lines
1986
14	4587380	Interface for connecting standard telephones to party lines
15	4567330	Interface for connecting standard telephones to party lines
1983
16	4406004	Ring scheduling apparatus for a digital multiplexed telecommunication system
17	4371756	Bridge lifter module
18	4371755	Bridge lifter circuit
19	4368358	Loop sharing in digital systems
1981
20	4258230	Party line telephone system
1980
21	4221935	Control circuit for telephone subscriber station
1979
22	4168403	Key telephone system comprising only one control lead per outside line
23	4166931	Miniature bridge lifter for telephone lines
1978
24	4109112	Telephone isolation device
1977
25	4056694	Telephone ringing detectors
26	4048448	Multiparty telephone ringing
27	4021617	Telephone ringer isolator
1976
28	3974342	Switching arrangement for telecommunications systems
© 2017, ПАТ-Инфо, В.И. Карнышев Дата формирования списка: 03.04.2017