Patents by Inventor Paul E. Kachmar

Paul E. Kachmar 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).

  • Signaling device
    Patent number: 5427311
    Abstract: A signaling device that visibly indicates that the door of a mailbox has been opened. During operation, a signal flag is held in a generally vertical or elevated position by the door of the mailbox which remains closed. However, upon opening the door, restraint on the signal flag is released, thereby causing it to pivot downwardly and come to rest adjacent and atop the mailbox.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: June 27, 1995
    Inventor: Paul E. Kachmar