Patents by Inventor Harry C. Gilhula

Harry C. Gilhula 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: 3938268
    Abstract: An index system for indexing directories such as telephone books includes a paper guide strip positioned adjacent a film plastic tab strip segmented into a plurality of uniquely identified tabs spaced along the tab strip. The guide and tab strips are coupled to one another along adjacent edges by means of an adhesive transfer strip extending the length of the guide and tab strips along the junction thereof on one side. As tabs are removed for application, the pressure-sensitive adhesive is transferred to the tabs while the guide and transfer strips serve as a guide for positioning the tabs on the pages of the directory.
    Type: Grant
    Filed: January 31, 1974
    Date of Patent: February 17, 1976
    Inventor: Harry C. Gilhula