Patents by Inventor Daniel M. Calkins

Daniel M. Calkins 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).

  • Sample display unit
    Patent number: D560080
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: January 22, 2008
    Assignee: Columbia Insurance Company
    Inventors: Terry Shoenberger, Daniel M. Calkins, Anthony J. Knapp, III