Brett J. Grandchamp

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South Portland, ME, US

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Patents Grantslast 30 patents

Information Patent Grant
Multiplexer for adjacent NTSC and DTV channels
- Patent number 6,710,813
- Issue date Mar 23, 2004
- SPX Corporation
- Brett J. Grandchamp
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal multiplexer and method
- Patent number 6,704,285
- Issue date Mar 9, 2004
- SPX Corporation
- Brett J. Grandchamp
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal multiplexer and method
- Patent number 6,580,729
- Issue date Jun 17, 2003
- General Signal Corporation
- Brett J. Grandchamp
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Switching waveguide directional coupler and method
- Patent number 6,359,530
- Issue date Mar 19, 2002
- General Signal Corporation
- Brett J. Grandchamp
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Broadband rigid coaxial transmission line
- Patent number 5,455,548
- Issue date Oct 3, 1995
- General Signal Corporation
- Brett J. Grandchamp
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Coaxial connector accommodating differential expansion
- Patent number 5,401,173
- Issue date Mar 28, 1995
- General Signal Corporation
- Brett J. Grandchamp
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER