TREA

Donald H. Shell

Follow

Person

  • Bethany, OK, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for manufacturing large diameter plastic pipe
    • Patent number 4,869,766
    • Issue date Sep 26, 1989
    • The Lamson & Sessions Co.
    • Harold T. Pate
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Large diameter plastic pipe
    • Patent number 4,495,970
    • Issue date Jan 29, 1985
    • Thyssen-Bornemisza Inc.
    • Harold T. Pate
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL