TREA

Stephen F. Stefely

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  • Elmhurst, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fire stop closure
    • Patent number 5,421,127
    • Issue date Jun 6, 1995
    • Stephen F. Stefely
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Grant

    Fire stop device
    • Patent number 5,301,475
    • Issue date Apr 12, 1994
    • Stephen F. Stefely
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...