John D. Riski

Person

  • Minto, ND, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Soil crust loosening apparatus

    • Patent number 4,768,596
    • Issue date Sep 6, 1988
    • Harriston Industries, Inc.
    • John D. Riski
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING