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John Barry
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Merewether Hts, AU
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last 30 patents
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Patent Grant
Drill bit and drill tip having a tip-locating structure
Patent number
7,051,822
Issue date
May 30, 2006
Sandvik Intellectual Property AB
John Barry
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
DRILLING STRING, THREADED COUPLING, AND ROD ADAPTOR FOR ROTARY DRIL...
Publication number
20220074273
Publication date
Mar 10, 2022
Sandvik Mining and Construction G.m.b.H.
Manoj Kumar SURYADEVARA
E21 - EARTH DRILLING MINING
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Patent Application
Drill bit and drill tip having a tip-locating structure
Publication number
20040245023
Publication date
Dec 9, 2004
SANDVIK AB
John Barry
E21 - EARTH DRILLING MINING