William M. Fritch Jr.

Person

  • Bel Air, MD, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Advanced chemical-biological mask

    • Patent number 6,176,239
    • Issue date Jan 23, 2001
    • The United States of America as represented by the Secretary of the Army
    • Corey M. Grove
    • A62 - LIFE-SAVING FIRE-FIGHTING