Sterling J. Anderson

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Maple Grove, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulically actuated mechanical rock excavator
- Patent number 5,015,039
- Issue date May 14, 1991
- The United States of America as represented by the Department of the Interior
- Sterling J. Anderson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Triangular shaped cutting head for use with a longwall mining machine
- Patent number 4,303,277
- Issue date Dec 1, 1981
- The United States of America as represented by the Secretary of the Interior
- Wallace W. Roepke
- E21 - EARTH DRILLING MINING