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Roger Espinoza

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  • Brentwood, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gate valve locking device
    • Patent number 7,219,685
    • Issue date May 22, 2007
    • Roger Espinoza
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Quarter turn valve locking device
    • Patent number 7,114,698
    • Issue date Oct 3, 2006
    • Roger Espinoza
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Quarter turn valve locking device
    • Publication number 20050092367
    • Publication date May 5, 2005
    • Roger Espinoza
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...