ClassID:

227530

H04M1/745 - CPC Classification

Classification description:

Substation equipment, e.g. for use by subscribers; Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults Protection devices or circuits for voltages surges on the line

Recent Application in this class:
#1
20210297526
2021-09-23

Cable Pair Stabilizer Unit and Method and System for Generating Sealing Current

#2
20190379784
2019-12-12

Cable pair stabilizer unit and method and system for generating sealing current

#3
20180367679
2018-12-20

Access node and method

#4
20180367678
2018-12-20

Access node and method

#5
20180359370
2018-12-13

Access node and method

#6
20180343348
2018-11-29

Access node and method

#7
20180338048
2018-11-22

Access node and method

#8
20170230516
2017-08-10

Access node and method

#9
20170041456
2017-02-09

Communication apparatus, control method for communication apparatus, and storage medium

#10
20170019526
2017-01-19

Protection of a telephone line against overvoltages

#11
20170005418
2017-01-05

Surge protection device with at least one surge protection unit

#12
20160261736
2016-09-08

Communication module

#13
20160198038
2016-07-07

Cable pair stabilizer unit and method and system for generating sealing current

#14
20160065728
2016-03-03

Network interface devices having external demarcation points

#15
20150171619
2015-06-18

Transmission bandwidth extender/category 6 surge protector

#16
20140211359
2014-07-31

Surge protection circuit and communication apparatus

#17
20130070383
2013-03-21

Solid state protector module

#18
20120257308
2012-10-11

Surge Protection Circuit

#19
20120069990
2012-03-22

Shared protection scheme for multiple variable batteries

#20
20120002801
2012-01-05

Subscriber Line Interface Circuitry Line Driver

#21
20110050439
2011-03-03

PROTECTOR HAVING A DUAL-WARNING OUTER CASING

#22
20110050413
2011-03-03

DUAL-WARNING PROTECTOR HAVING MULTIPLE PROTECTIONS

#23
20100329445
2010-12-30

Surge immunity circuit for telecom DDA

#24
20100316214
2010-12-16

Integrated access device and overcurrent protection method

#25
20100182727
2010-07-22

Surge protection module

#26
20100128406
2010-05-27

Power supplies

#27
20100119054
2010-05-13

Telephone interface circuit for providing over-current and over-voltage protection

#28
20090296301
2009-12-03

SCR circuit for protecting central office end of telephone line

#29
20090296300
2009-12-03

SCR circuit for protecting customer end of telephone line

#30
20090161282
2009-06-25

Transient protection at a line interface

#31
20090082478
2009-03-26

AZEOTROPE-LIKE COMPOSITIONS OF 1,1,1,3,3-PENTAFLUOROPROPANE AND HYDROCARBONS

#32
20080198985
2008-08-21

Audio processing apparatus

#33
20080118058
2008-05-22

Splitter with Active Transient Suppression Circuit

#34
20080037773
2008-02-14

Telephone interface circuit

#35
20070201687
2007-08-30

Subscriber Line Interface Circuitry

#36
20070201686
2007-08-30

Subscriber Line Interface Circuitry

#37
20070116257
2007-05-24

Sealing current terminator for inhibiting oxidation and methods therefor

#38
20070110384
2007-05-17

Drop cable with fiber optic connector and methods for fabricating same

#39
20070025549
2007-02-01

Telephone interface circuit

#40
20070003056
2007-01-04

Assembly of a telecommunications module and at least one protection plug

#41
20060262478
2006-11-23

Surge protected broadband power line communication system

#42
20060164777
2006-07-27

Circuit arrangement for limiting a ringing current

#43
20060002545
2006-01-05

Power offloading for a subscriber line interface circuit

#44
20060002544
2006-01-05

Apparatus for protecting multi-function products from surge voltage

#45
20050053228
2005-03-10

System and method for the powering and fault protection of remote telecommunications equipment

#46
20050008142
2005-01-13

DSL protector having a detachable wire interface

#47
20050002517
2005-01-06

Subscriber line interface circuitry