H04M 3/64
Arrangements for signalling the number or class of the calling line to
Official title: Arrangements for signalling the number or class of the calling line to the operator (between operators in inter- exchange working H04M5/18)
H04M3/64 (Arrangements for signalling the number or class of the calling line to) appears on 11 US grants and 2 published applications in this corpus.
Search patents in H04M- Granted patents
- 11
- Published applications
- 2
- Assignees
- 7
- Inventors
- 14
- Latest grant
- 25 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Methods for emergency response location (ERL) provision in a voice over internet protocol (VoIP) 911 server for non-direct inward dialing (DID) callers and related systems and computer program products25 Feb 2025US 12,238,245 B1Bandwidth Inc.
- System and method for monitoring incoming communications to a telecommunications device9 Aug 2011US 7,995,726 B2AT&T Intellectual Property I, L. P.
- System and method for monitoring incoming communications to a telecommunications device10 Apr 2007US 7,203,293 B1BellSouth Intellectual Property Corporation
- System and method for monitoring incoming communications to a telecommunications device16 Dec 2003US 6,665,388 B2BellSouth Intellectual Property Corporation
- Remote telecommunications system for automatic number identification screening17 Sep 2002US 6,453,037 B1MCI Communications Corporation
- System and Method for Monitoring Incoming Communications to a Telecommunications Device6 Sep 2007US 2007/0206750 A1AT&T Intellectual Property I, L. P.
- System and method for monitoring incoming communications to a telecommunications device20 Jun 2002US 2002/0076022 A1BellSouth Intellectual Property Corporation
Most cited
By later US patents
- Converter for in-band routing and/or origination information126US 5,046,088 ADialogic Corporation · 1991
- System and method for monitoring incoming communications to a telecommunications device116US 6,665,388 B2BellSouth Intellectual Property Corporation · 2003
- Telephone patching apparatus40US 4,072,827 A1978
- Telephone system and method for providing directory assistance/intercept information37US 4,053,949 A1977
- System for monitoring dialled telephone numbers31US 4,013,839 ATelstop S.A. · 1977