Key Concepts, Inc.

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Woburn, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of and apparatus for improved capacitive displacement and pr...
- Patent number 4,933,807
- Issue date Jun 12, 1990
- Key Concepts, Inc.
- Donald A. Duncan
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Capacitive pressure-sensing method and apparatus
- Patent number 4,852,443
- Issue date Aug 1, 1989
- Key Concepts, Inc.
- Donald A. Duncan
- G10 - MUSICAL INSTRUMENTS ACOUSTICS