Patents by Inventor Lewis D. Carter

Lewis D. Carter 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 signal device
    Patent number: 4018379
    Abstract: A signal device for a mailbox of the type having a pair of forwardly protruding, engageable latch straps on the box and door. A signal device comprises a plate having a slot near the lower edge thereof that slips over the latch strap on the box to be pivotable thereon. When the door is closed with the plate held erect, it engages depending portions of the plate to hold it erect. Opening the door releases the plate and allows it to fall.
    Type: Grant
    Filed: March 23, 1976
    Date of Patent: April 19, 1977
    Inventor: Lewis D. Carter