TREA

Roger Wallis

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  • Sheffield 2, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vessel outlet
    • Patent number 5,603,859
    • Issue date Feb 18, 1997
    • Foseco International Limited
    • Roger Wallis
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Riser sleeves for metal casting moulds
    • Patent number 4,665,966
    • Issue date May 19, 1987
    • Foseco International Limited
    • Max G. Neu
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Torch, useful in air-carbon arc processes
    • Patent number 4,464,555
    • Issue date Aug 7, 1984
    • Roger Wallis
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR