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Joseph L. Stein

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  • Pittsburgh, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of manufacturing a slide gate
    • Patent number 4,554,035
    • Issue date Nov 19, 1985
    • General Refractories Company
    • Joseph L. Stein
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Slide gate
    • Patent number 4,383,624
    • Issue date May 17, 1983
    • General Refractories Company
    • Joseph L. Stein
    • B22 - CASTING POWDER METALLURGY