Patents by Inventor Mark D. Rosenthal

Mark D. Rosenthal 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).

  • Portable window stop
    Patent number: 4736974
    Abstract: A keyless lock for a window, sliding door and the like is provided and is in a wedge shaped configuration so as to fit between two parts of the window and sliding door to prevent opening thereof.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: April 12, 1988
    Inventor: Mark D. Rosenthal