Patents by Inventor John Poloha

John Poloha 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 gravity signalling apparatus
    Patent number: 4821953
    Abstract: A mailbox signalling apparatus (10) for use on both rural type (100) and residential type (200) mailboxes; wherein, the apparatus (10) includes a suspension unit (11) having a support arm (14) and at least one elongated slot (16); and, a signal unit (12) including a signal member (20) attached to the suspension unit (11) and provided with an attachment ring (25) that is dimensioned to be selectively received over the support arm (14) and within the slot (16).
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: April 18, 1989
    Inventor: John Poloha