Membership
Tour
Register
Log in
Arthur L. Story
Follow
Person
Butte, MT, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Coring device with an improved core sleeve and anti-gripping collar...
Patent number
4,566,545
Issue date
Jan 28, 1986
Norton Christensen, Inc.
Arthur L. Story
E21 - EARTH DRILLING MINING