Patents by Inventor David Leflet

David Leflet 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).

  • Two-position signal device
    Patent number: 4885857
    Abstract: The novel two-position signal device comprises a generally rectangular base plate, a pair of substantially parallel flanges upstanding along opposite edges of the base plate, a signal panel pivotally mounted on the flanges and adapted to be rotated between two different signaling positions against the base plate between the flanges.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: December 12, 1989
    Inventor: David Leflet
  • Single-position signal device
    Patent number: 4860474
    Abstract: A single-position signal device comprising a base plate adapted to be attached to a primary object, such as an office file, and a signal panel having obverse and reverse display sides mounted in a single signaling position against the base plate which can be releasably held in the signaling position while displaying one of the display sides, and can be reversed to display the other of the display sides.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: August 29, 1989
    Inventor: David Leflet