David C. Tigwell

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Remote control system
- Patent number 6,021,319
- Issue date Feb 1, 2000
- Colorado Meadowlark Corporation
- David C. Tigwell
- G08 - SIGNALLING
Information Patent Grant
Remote control system
- Patent number 5,379,453
- Issue date Jan 3, 1995
- Colorado Meadowlark Corporation
- David C. Tigwell
- G08 - SIGNALLING
Information Patent Grant
Apparatus with a portable UHF radio transmitter remote for controll...
- Patent number 5,227,780
- Issue date Jul 13, 1993
- Houston Satellite Systems, Inc.
- David C. Tigwell
- G08 - SIGNALLING
Information Patent Grant
Method and apparatus for tracking satellites in inclined orbits
- Patent number 5,077,561
- Issue date Dec 31, 1991
- HTS
- W. Daniel Gorton
- G01 - MEASURING TESTING
Information Patent Grant
Stop light for a motorcyclist's helmet
- Patent number 4,769,629
- Issue date Sep 6, 1988
- John N. Stone, Jr.
- David C. Tigwell
- A42 - HEADWEAR
Information Patent Grant
Method and apparatus for simultaneously actuating navigational lant...
- Patent number 4,620,190
- Issue date Oct 28, 1986
- Tideland Signal Corporation
- David C. Tigwell
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT