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Dennis J. Dugas
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Mapleville, RI, US
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last 30 patents
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Patent Grant
Bit retention system
Patent number
6,698,537
Issue date
Mar 2, 2004
Numa Tool Company
Jack H. Pascale
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Patents Applications
last 30 patents
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Patent Application
Bit retention system
Publication number
20030102167
Publication date
Jun 5, 2003
Numa Tool Company.
Jack H. Pascale
E21 - EARTH DRILLING MINING