Robert R. Hallstein

Person

  • Danning, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Pressure responsive, manually opening valve

    • Patent number 4,343,327
    • Issue date Aug 10, 1982
    • The United States of America as represented by the Secretary of the Navy
    • Robert R. Hallstein
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...