William David Longfritz

Person

  • Fonda, NY, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Seal assembly

    • Patent number 6,193,240
    • Issue date Feb 27, 2001
    • General Electric Company
    • Roger Neal Johnson
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES