David A. Smith

Person

  • Smithfield, PA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Highway crash barrier monitoring system

    • Patent number 6,539,175
    • Issue date Mar 25, 2003
    • Energy Absorption Systems, Inc.
    • Jeffrey A. Geary
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES