James H. Campbell IV

Follow

Person

Winter Haven, FL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for automated audio teleconferencing having en...
- Patent number 5,903,629
- Issue date May 11, 1999
- Protel, Inc.
- James H. Campbell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for automated audio teleconferencing having en...
- Patent number 5,828,743
- Issue date Oct 27, 1998
- Protel, Inc.
- William E. Pinnell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for automated audio teleconferencing having en...
- Patent number 5,719,928
- Issue date Feb 17, 1998
- Protel, Inc.
- William E. Pinnell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE