Patents by Inventor John Grosart

John Grosart 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).

  • Inking device
    Patent number: 4085672
    Abstract: A device for applying ink to a printing surface is described. The device includes two resilient ink flow control blades. The blades are deflected by contact with said surface to allow ink to flow onto the latter. The blades close to cut off the flow of ink as the device is lifted off the surface.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: April 25, 1978
    Inventor: John Grosart