Margaret A. Roberts

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Morgantown, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for temporary support and isolation for a conv...
- Patent number 6,659,269
- Issue date Dec 9, 2003
- Consol Engergy Inc.
- Margaret A. Roberts
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method of providing temporary support for an extended conveyor belt
- Patent number 5,938,004
- Issue date Aug 17, 1999
- Consol, Inc.
- Margaret A. Roberts
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Apparatus for mining
- Patent number 4,957,405
- Issue date Sep 18, 1990
- Consolidation Coal Company
- Margaret A. Roberts
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Mine haulage method and apparatus
- Patent number 4,798,279
- Issue date Jan 17, 1989
- Consolication Coal Company
- Richard E. Doerr
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL