William E. Hall

Person

  • Lakewood, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Floating roof tank seal

    • Patent number 4,147,274
    • Issue date Apr 3, 1979
    • Shell Oil Company
    • William E. Hall
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL