Patents by Inventor Donald W. Fretwell

Donald W. Fretwell 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: 4608045
    Abstract: An applicator for impressing brands or medicaments on animals has a handle mounted for movement towards or from an applicator pad containing a liquid chamber communicating with a base, a part of which, having the configuration of the area over which liquid is to be applied to an animal, is liquid-permeable. A liquid container, which may serve as the handle, leads to the liquid chamber by way of a valve mechanism such that each movement of the handle towards the applicator pad as the pad base is pressed on an animal introduces to the liquid chamber liquid under pressure which is expelled through the liquid-permeable part of the applicator pad base.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: August 26, 1986
    Inventor: Donald W. Fretwell