Patents by Inventor Albert Van Druff, Jr.

Albert Van Druff, Jr. 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).

  • Mailbox insert
    Patent number: 5009366
    Abstract: A tray-type mailbox insert for use in delivering and removing mail from a mailbox formed of a foldable blank including a bottom panel, side panels, and an end panel and having locking panels and locking tabs to secure the insert in a tray-like configuration.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: April 23, 1991
    Assignee: Cornerstone Products Inc.
    Inventors: Albert van Druff, Jr., David A. Fussell
  • In store keep-a-cooler
    Patent number: 5007249
    Abstract: An auxiliary, portable storage and cooling unit in combination with a primary source of refrigerated air providing a secondary source of refrigerated air formed of a housing having an upper product storage compartment and a fan driven refrigerated air flow path including an air inlet duct for connection to the primary source of refrigerated air, an air inlet chamber, air distribution ducts, and air distribution chambers for feeding refrigerated air into the storage compartment.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: April 16, 1991
    Assignee: Cornerstone Products Inc.
    Inventor: Albert Van Druff, Jr.
  • Carton blank
    Patent number: D328863
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: August 25, 1992
    Inventor: Albert Van Druff, Jr.