Patents by Inventor David N. Bowman

David N. Bowman 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: 4377920
    Abstract: A wick applicator for herbicide which includes first and second horizontally elongated conduits. The first conduit is elevated above the second conduit and a plurality of wicks extend between the conduits and are in fluid communication with the interior of each. Herbicide is provided to the interior of the first conduit while a vacuum is applied to the interior of the second conduit to withdraw herbicide therefrom which is directed thereto by the wicks. A pump is utilized for the purpose and the same recirculates the herbicide back to the first conduit to conserve on herbicide use and to provide a fine degree of control over the flow rate of herbicide through the wicks.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: March 29, 1983
    Assignee: Bowman Manufacturing Co., Inc.
    Inventor: David N. Bowman