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William G. Riel
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Wooster, OH, US
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Patents Grants
last 30 patents
Information
Patent Grant
Apparatus and method for a drilling assembly
Patent number
8,033,345
Issue date
Oct 11, 2011
Astec Industries, Inc.
Guy Randall
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus and method for modified horizontal directional drilling a...
Patent number
7,318,491
Issue date
Jan 15, 2008
Astec Industries, Inc.
William G. Riel
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual wall drill string assembly
Patent number
7,152,700
Issue date
Dec 26, 2006
American Augers, Inc.
Kris L. Church
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual wall drill string assembly
Patent number
7,134,514
Issue date
Nov 14, 2006
American Augers, Inc.
Bill Riel
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Apparatus and method for modified horizontal directional drilling a...
Publication number
20060243490
Publication date
Nov 2, 2006
Astec Industries, Inc.
William G. Riel
E21 - EARTH DRILLING MINING
Information
Patent Application
Dual wall drill string assembly
Publication number
20050284664
Publication date
Dec 29, 2005
Bill Riel
E21 - EARTH DRILLING MINING
Information
Patent Application
Dual wall drill string assembly
Publication number
20050103527
Publication date
May 19, 2005
Kris L. Church
E21 - EARTH DRILLING MINING