David M. Simko

Person

  • Solon, OH, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Bellows valve

    • Patent number 4,201,366
    • Issue date May 6, 1980
    • Oliver L. Danko
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...