Patents by Inventor Thomas R. Lauer

Thomas R. Lauer 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).

  • Combination tractor and farm implement hitch means
    Patent number: 4073346
    Abstract: A first farm implement having a front three-point hitch connection for mounting on a tractor is equipped with a rear three-point hitch means for connection with a front three-point hitch means on a second farm implement so that both farm implements can be lifted and towed in tandem fashion, or each implement can be individually lifted or towed by a single tractor. The first implement includes an elongated transverse tool bar which carries the respective connections of both the front and rear three-point hitch means therefor in alignment longitudinally of the tractor.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: February 14, 1978
    Assignee: Iowa State Univ. Research Foundation, Inc.
    Inventors: Roger L. Groth, Randall L. Harvey, Thomas R. Lauer, Morris L. Ronnebaum