Douglas K. Holland

Person

  • Rialto, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Coal dust containment

    • Patent number 5,140,911
    • Issue date Aug 25, 1992
    • Texaco Inc.
    • Douglas K. Holland
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL