Patents by Inventor Gale Rettkowski

Gale Rettkowski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4798151
    Abstract: A furrow opening point 40 is described for attachment directly to the seed boot of a hoe type seed drill between the split packer wheels. The furrow opening point 40 has an elongated body 50 that extends from an upper fertilizer receiving portion 56 to a bottom edge 54 of the soil engaging portion 52. The soil engaging portion has an upper section 61 and a lower section 62 for forming a two-tier furrow. A liquid fertilizer passageway 90 extends downward through the elongated body to the bottom edge 54 for dispensing liquid fertilizer at the base of the furrow. A dry granular fertilizer passageway 96 extends downward through the elongated body to a bottom surface 84 for dispensing dry granular fertilizer down a vertical channel formed along the trailing face 80 to the base of the furrow. A leveling section 100 forward of the seed opening 30 levels and firms the soil in the upper portion of the two-tier furrow to form a good seed bed.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: January 17, 1989
    Assignee: R & R Innovations, Inc.
    Inventors: John G. Rodrigues, Jr., Gale Rettkowski