Edward F. Divers

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Extensible brattice support system for mine face ventilation
- Patent number 4,494,894
- Issue date Jan 22, 1985
- The United States of America as represented by the Secretary of the Interior
- Edward F. Divers
- E21 - EARTH DRILLING MINING
Information Patent Grant
Slideboard device for underground mine face ventilation
- Patent number 4,282,802
- Issue date Aug 11, 1981
- The United States of America as represented by the Secretary of the Interior
- Edward F. Divers
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combined rotating bed scrubber and water eliminator
- Patent number 4,266,829
- Issue date May 12, 1981
- The United States of America as represented by the Secretary of the Interior
- Edward F. Divers
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine face ventilation system
- Patent number 4,235,163
- Issue date Nov 25, 1980
- The United States of America as represented by the Secretary of the Interior
- Edward F. Divers
- E21 - EARTH DRILLING MINING
Information Patent Grant
Extensible brattice and cantilevered roof mounted support system th...
- Patent number 4,180,352
- Issue date Dec 25, 1979
- The United States of America as represented by the Secretary of the Interior
- Edward F. Divers
- E21 - EARTH DRILLING MINING