William B. Van Lennep

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Pepperell, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Headset ear seal
- Patent number 5,138,722
- Issue date Aug 18, 1992
- David Clark Company Inc.
- Richard M. Urella
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Surveillance microphone holder
- Patent number 4,700,397
- Issue date Oct 13, 1987
- Controlonics Corporation
- Philip A. Zimmermann
- H04 - ELECTRIC COMMUNICATION TECHNIQUE