Patents by Inventor Clarence O. Davis

Clarence O. Davis 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).

  • Self-closing mailbox device
    Patent number: 5226589
    Abstract: A mailbox having an extension spring located inside the mailbox body between the door and body interior which allows the mailbox door to remain open when it is pivoted below the mailbox floor while at the same time automatically allowing the door to close when it is pivoted above the floor level.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: July 13, 1993
    Inventor: Clarence O. Davis