Patents by Inventor David W. Wollin

David W. Wollin 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).

  • Irrigation line coupler
    Patent number: 3964774
    Abstract: Flanged coupler ends are pressed together by channel-like arcuate segments hingedly and expansibly connected at one end of each segment by a resilient member, and releasably latched together at their other ends.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: June 22, 1976
    Assignee: IRECO Industries, Inc.
    Inventors: David W. Wollin, James E. Cook