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H&H Drilling Tools, LLC
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Houston, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Interchangeable bail link apparatus and method
Patent number
9,732,567
Issue date
Aug 15, 2017
H&H DRILLING TOOLS, LLC
Michael W. Hayes
E21 - EARTH DRILLING MINING
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Patents Applications
last 30 patents
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Patent Application
INTERCHANGEABLE BAIL LINK APPARATUS AND METHOD
Publication number
20160115744
Publication date
Apr 28, 2016
H&H Drilling Tools, LLC
Michael W. HAYES
E21 - EARTH DRILLING MINING
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Trademark
86728082 - X-CHANGE LINK SYSTEM
Serial number
86728082
Filing date
Aug 18, 2015
H&H Drilling Tools, LLC
6 - Common metals and their alloys