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Fred L. Watson
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Templeton, CA, US
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last 30 patents
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Patent Grant
Drill steering in high magnetic interference areas
Patent number
4,909,336
Issue date
Mar 20, 1990
Applied Navigation Devices
David C. Brown
E21 - EARTH DRILLING MINING
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Patent Grant
Apparatus and method to communicate bidirectional information in a...
Patent number
4,593,559
Issue date
Jun 10, 1986
Applied Technologies Associates
David C. Brown
E21 - EARTH DRILLING MINING
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Patent Grant
Apparatus and method to communicate information in a borehole
Patent number
4,459,760
Issue date
Jul 17, 1984
Applied Technologies Associates
Fred L. Watson
E21 - EARTH DRILLING MINING