John L. Barker Sr.

Person

  • Troy, MI, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Disk protector/holder

    • Patent number 4,687,101
    • Issue date Aug 18, 1987
    • John L. Barker
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL