TREA

Semyon Fridlyand

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  • Thornhill, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ball valve locking device
    • Patent number 6,467,500
    • Issue date Oct 22, 2002
    • Mueller Co.
    • Semyon Fridlyand
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Ball valve locking device
    • Publication number 20010032673
    • Publication date Oct 25, 2001
    • Semyon Fridlyand
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...