TREA

Burton L. Preston

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  • Mansfield, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulically balanced valve mechanism
    • Patent number 4,479,631
    • Issue date Oct 30, 1984
    • Interpace Corporation
    • R. Frank Nestich
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulically balanced valve mechanism
    • Patent number 4,453,560
    • Issue date Jun 12, 1984
    • Interpace Corporation
    • R. Frank Nestich
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...