David J. Ladd

Person

Saratoga, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Voice-messaging system with non-user outcalling and auto-provisioni...
- Patent number 6,097,791
- Issue date Aug 1, 2000
- Octel Communications Corporation
- David J. Ladd
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voice messaging system and method providing message delivery verifi...
- Patent number 5,991,370
- Issue date Nov 23, 1999
- Lucent Technologies Inc.
- David J. Ladd
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Call processing system with facsimile processing
- Patent number 5,517,556
- Issue date May 14, 1996
- VMX, Inc.
- Gregory E. Pounds
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Integrated application controlled call processing and messaging system
- Patent number 5,355,406
- Issue date Oct 11, 1994
- VMX, Incorporated
- Arnold Chencinski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
PBX telephone call control system
- Patent number 5,325,422
- Issue date Jun 28, 1994
- VMX, Inc.
- David J. Ladd
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Interface to and operation of a voice messaging system
- Patent number 5,117,451
- Issue date May 26, 1992
- VMX/OPCOM
- David J. Ladd
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Interface to and operation of a voice messaging system
- Patent number 4,926,462
- Issue date May 15, 1990
- VMX/OPCOM
- David J. Ladd
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

David J. Ladd

Person

Patents Grantslast 30 patents

Voice-messaging system with non-user outcalling and auto-provisioni...

Voice messaging system and method providing message delivery verifi...

Call processing system with facsimile processing

Integrated application controlled call processing and messaging system

PBX telephone call control system

Interface to and operation of a voice messaging system

Interface to and operation of a voice messaging system