H04M1/80 - CPC Classification Index

ClassID:

227533 ⎘

H04M1/80 - CPC Classification

Classification description:

Substation equipment, e.g. for use by subscribers Telephone line holding circuits

Recent Application in this class:

20220294899

2022-09-15

PROTECTING USER DATA DURING AUDIO INTERACTIONS

20220006898

2022-01-06

Protecting user data during audio interactions

20170093201

2017-03-30

Systems and methods for enabling a universal back-cover wireless charging solution

20150028803

2015-01-29

Systems and methods for enabling a universal back-cover wireless charging solution

20110085651

2011-04-14

Remotely Activated On-Hold Circuit

20090046838

2009-02-19

System, Method, and Device for Playing Music During Conversation Suspension

20070121922

2007-05-31

Method for playing a personalized clip

20070099651

2007-05-03

Hold on telephony feature

20070067546

2007-03-22

ON-HOLD MESSAGE SYSTEM WITH FLASH MEMORY DRIVE

#10

20070038443

2007-02-15

User-selectable music-on-hold for a communications device

#11

20060251231

2006-11-09

IP telephone system having a hold function and a callback function

#12

20060126807

2006-06-15

Music on hold device

#13

20050069101

2005-03-31

System and method for using telephony controls on a personal computer

#14

13872125

2015-09-15

Remotely activated on-hold circuit