Patents by Inventor Fritz D. Harnsberger

Fritz D. Harnsberger 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).

  • Syringe having a flexible collar
    Patent number: 5509903
    Abstract: The disclosure relates to syringes which include a substantially rigid, hollow syringe body, a plunger and a flexible, finger-conformable grip, guard, collar or collet which are disposed about one end thereof.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: April 23, 1996
    Assignee: Dennis T. Grendahl
    Inventors: Dennis T. Grendahl, Fritz D. Harnsberger