TREA

Erkki P. Niskanen

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  • Helsinki, FI
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Patents Grantslast 30 patents

  • Information Patent Grant

    Spindle valve for a tube system for liquids
    • Patent number 4,586,538
    • Issue date May 6, 1986
    • Erkki Niskanen Oy
    • Erkki P. Niskanen
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Blocking valve for liquids
    • Patent number 4,526,200
    • Issue date Jul 2, 1985
    • Erkki Niskanen Oy
    • Erkki Niskanen
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Group valve for two separate liquid supply lines
    • Patent number 4,196,752
    • Issue date Apr 8, 1980
    • Koltek Oy
    • Erkki P. Niskanen
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...