Rodney W. O'Brian

Follow

Person

Burton-on-Trent, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Screening apparatus
- Patent number 4,428,832
- Issue date Jan 31, 1984
- Coal Industry (Patents) Limited
- Michael P. Armstrong
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Control systems for material treatment plant
- Patent number 4,409,096
- Issue date Oct 11, 1983
- Coal Industry (Patents) Ltd.
- Rodney W. O'Brian
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Sizing screens
- Patent number 4,308,135
- Issue date Dec 29, 1981
- Coal Industry (Patents) Limited
- Michael P. Armstrong
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Sizing screens and feeder devices therefor
- Patent number 4,220,526
- Issue date Sep 2, 1980
- Coal Industry (Patents) Limited
- Michael P. Armstrong
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING