VMX/OPCOM

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San Jose, CA, US

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Patents Grantslast 30 patents

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

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