Membership
Tour
Register
Log in
Jack Castle
Follow
Person
Ft. Worth, TX, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Stepped polycrystalline diamond compact insert
Patent number
6,904,984
Issue date
Jun 14, 2005
Rock Bit L.P.
Roy D. Estes
E21 - EARTH DRILLING MINING