John W. Mason

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Roanoke, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Lay-in ceiling speaker
- Patent number 6,944,312
- Issue date Sep 13, 2005
- Valcom, Inc.
- John W. Mason
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Modular front panel and enclosure for electronic apparatus
- Patent number 5,229,925
- Issue date Jul 20, 1993
- Valcom, Inc.
- John D. Spencer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
DISTRIBUTED MODE LOUDSPEAKER WITH FREE MOTION HEAT SINK
- Publication number 20240007794
- Publication date Jan 4, 2024
- VALCOM, INC.
- John W. Mason
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IP Emergency Call Station with Mass Notification Voice Alerting
- Publication number 20150229774
- Publication date Aug 13, 2015
- VALCOM, INC.
- John W. Mason
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Lay-in ceiling speaker
- Publication number 20010053232
- Publication date Dec 20, 2001
- John W. Mason
- H04 - ELECTRIC COMMUNICATION TECHNIQUE