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John L. Hill, III
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Woodbridge, VA, US
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Patents Grants
last 30 patents
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Patent Grant
Centralizer-based survey and navigation device and method
Patent number
7,870,912
Issue date
Jan 18, 2011
Raytheon UTD, Incorporated
Benjamin Dolgin
E21 - EARTH DRILLING MINING
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Patent Grant
Centralizer-based survey and navigation device and method
Patent number
7,584,808
Issue date
Sep 8, 2009
Raytheon UTD, Incorporated
Benjamin Dolgin
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
CENTRALIZER-BASED SURVEY AND NAVIGATION DEVICE AND METHOD
Publication number
20100038068
Publication date
Feb 18, 2010
Benjamin Dolgin
E21 - EARTH DRILLING MINING