Patents by Inventor Frank DePaolo, Sr.

Frank DePaolo, Sr. 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).

  • Perma desk calendar
    Patent number: 4567680
    Abstract: This invention is a perpetual desk calendar, including a base on which to stand, a hollow case on the base, windows on the front of the case for seeing selected indicia printed on movable slides inside the case; the indicia indicating a year number, a month of the year and the date of the month.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: February 4, 1986
    Inventor: Frank DePaolo, Sr.