TREA

Ronald D. Gray

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  • Bethel Park, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual holding furnace
    • Patent number 4,004,793
    • Issue date Jan 25, 1977
    • Leotromelt Corporation
    • Ronald D. Gray
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    Cooling means for electric arc furnaces
    • Patent number 3,956,572
    • Issue date May 11, 1976
    • Pennsylvania Engineering Corporation
    • Ronald D. Gray
    • F27 - FURNACES KILNS OVENS RETORTS