Douglas A. Spencer

Person

Boulder, CO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Comprehensive echo control system
- Patent number 7,180,869
- Issue date Feb 20, 2007
- Avaya Technology Corp.
- Douglas A. Spencer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Integration of remote access and service
- Patent number 6,674,853
- Issue date Jan 6, 2004
- Avaya Technology Corp.
- Joel Ezell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Switch distribution via an intermediary switching network
- Patent number 5,982,783
- Issue date Nov 9, 1999
- Lucent Technologies Inc.
- Ernest J. Frey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hybrid time-slot and sub-time-slot operation in a time-division mul...
- Patent number 5,862,131
- Issue date Jan 19, 1999
- Lucent Technologies Inc.
- Norman W. Petty
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Port system for interfacing digital PBX to digital transmission fac...
- Patent number 5,521,903
- Issue date May 28, 1996
- AT&T Corp.
- Michael J. English
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wireless access telephone-to-telephone network interface architecture
- Patent number 5,305,308
- Issue date Apr 19, 1994
- AT&T Bell Laboratories
- Michael J. English
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile telephone system call processing arrangement
- Patent number 5,278,892
- Issue date Jan 11, 1994
- AT&T Bell Laboratories
- Brian D. Bolliger
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive synchronization arrangement
- Patent number 5,195,091
- Issue date Mar 16, 1993
- AT&T Bell Laboratories
- Charles Y. Farwell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wireless access telephone-to-telephone network interface architecture
- Patent number 5,195,090
- Issue date Mar 16, 1993
- AT&T Bell Laboratories
- Brian D. Bolliger
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive synchronization arrangement
- Patent number 5,184,347
- Issue date Feb 2, 1993
- AT&T Bell Laboratories
- Charles Y. Farwell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Fast packetized data delivery for digital networks
- Patent number 4,894,822
- Issue date Jan 16, 1990
- American Telephone and Telegraph Company AT&T Information Systems
- Rolfe E. Buhrke
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Time slot assignment facilities
- Patent number 4,510,596
- Issue date Apr 9, 1985
- AT&T Bell Labs
- Philip W. Hartmann
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Establishing and supporting data traffic in private branch exchanges
- Patent number 4,488,294
- Issue date Dec 11, 1984
- AT&T Bell Laboratories
- Tore L. Christensen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital switching over PAM bus system
- Patent number 4,398,287
- Issue date Aug 9, 1983
- Bell Telephone Laboratories, Incorporated
- Douglas A. Spencer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Secure data authentication apparatus
- Publication number 20030120923
- Publication date Jun 26, 2003
- Avaya Technology Corp.
- Robert R. Gilman
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Call classification by automatic recognition of speech
- Publication number 20030088403
- Publication date May 8, 2003
- Norman C. Chan
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Multi-detector call classifier
- Publication number 20030081756
- Publication date May 1, 2003
- Norman C. Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Comprehensive echo control system
- Publication number 20030043783
- Publication date Mar 6, 2003
- Douglas A. Spencer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Douglas A. Spencer

Person

Patents Grantslast 30 patents

Comprehensive echo control system

Integration of remote access and service

Switch distribution via an intermediary switching network

Hybrid time-slot and sub-time-slot operation in a time-division mul...

Port system for interfacing digital PBX to digital transmission fac...

Wireless access telephone-to-telephone network interface architecture

Mobile telephone system call processing arrangement

Adaptive synchronization arrangement

Wireless access telephone-to-telephone network interface architecture

Adaptive synchronization arrangement

Fast packetized data delivery for digital networks

Time slot assignment facilities

Establishing and supporting data traffic in private branch exchanges

Digital switching over PAM bus system

Patents Applicationslast 30 patents

Secure data authentication apparatus

Call classification by automatic recognition of speech

Multi-detector call classifier

Comprehensive echo control system