E. Bertram Berkley

Person

  • Kansas City, MO, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Reusable envelope

    • Patent number 4,436,202
    • Issue date Mar 13, 1984
    • Tension Envelope Corporation
    • E. Bertram Berkley
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL