Patents by Inventor Kirk Willis

Kirk Willis 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).

  • Injection planting tool
    Patent number: 4191116
    Abstract: An improvement in an injection planting tool of the type shown in U.S. Pat. No. 4,031,832. The improvement is a detent mechanism on the tool that is manually operable to grasp the plant container being injection planted by a person with the tool in the event a rock interfers with the attempted planting, so that the container can be retained in the tool for another attempted planting.
    Type: Grant
    Filed: August 3, 1978
    Date of Patent: March 4, 1980
    Assignee: Illinois Tool Works Inc.
    Inventors: C. Jay Allison, Jr., Kirk Willis