Patents by Inventor Irwin Warshaw

Irwin Warshaw 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).

  • Stacked tray for slotted cards
    Patent number: 4456128
    Abstract: The apparatus comprises two trays, each having track means to hold the slotted cards, placed in a stacked configuration and connected by support means. The upper tray can be pivoted from a position substantially parallel to the lower tray to a second, raised position angular to the first tray.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: June 26, 1984
    Inventor: Irwin Warshaw