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David H. Surgnier
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Golden, CO, US
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last 30 patents
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Patent Grant
Horizontal inflation tool
Patent number
5,186,258
Issue date
Feb 16, 1993
CTC International Corporation
Edward T. Wood
E21 - EARTH DRILLING MINING
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Patent Grant
Horizontal inflatable tool
Patent number
5,082,062
Issue date
Jan 21, 1992
CTC Corporation
Edward T. Wood
E21 - EARTH DRILLING MINING