Patents by Inventor John C. Hanegraaf

John C. Hanegraaf 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: 4919016
    Abstract: An opener tool for a tab top beverage container or the like is adapted for engagement with the fingertip of a user. The opener tool includes a finger-engaging portion and a portion adapted to bear against the front of the fingertip. A tab engaging structure is formed on the latter portion for engaging the tab top of the beverage container. The tab engaging portion includes a tab receiving passage which extends along an axis substantially parallel to and spaced inwardly from the longitudinal axis of the portion of the user's finger engaging the opener tool. The structure so formed provides an efficient and easy to operate tab top opening mechanism.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: April 24, 1990
    Inventor: John C. Hanegraaf