Roger A. Wendt

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Londonderry, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Calibrated color scanner
- Patent number 5,424,537
- Issue date Jun 13, 1995
- Howtek, Inc.
- Richard F. Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Calibrated color scanner with reference level adjustment
- Patent number 5,237,172
- Issue date Aug 17, 1993
- Howtek, Inc.
- Richard F. Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Intrusion detection system
- Patent number 4,772,875
- Issue date Sep 20, 1988
- Denning Mobile Robotics, Inc.
- James F. Maddox
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Fire detection system with IR and UV ratio detector
- Patent number 4,455,487
- Issue date Jun 19, 1984
- Armtec Industries, Inc.
- Roger A. Wendt
- G08 - SIGNALLING
Information Patent Grant
Diaphragm type piezoelectric electroacoustic transducer
- Patent number 4,228,379
- Issue date Oct 14, 1980
- American District Telegraph Company
- John K. Guscott
- G10 - MUSICAL INSTRUMENTS ACOUSTICS