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John A. Spisak

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  • Avon, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Collet grip riser fitting
    • Patent number 4,832,379
    • Issue date May 23, 1989
    • The Pipe Line Development Company
    • Edward B. Smith
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Safety cock
    • Patent number 4,049,234
    • Issue date Sep 20, 1977
    • The Pipe Line Development Co.
    • John A. Spisak
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...