Patents by Inventor Borislav Lester

Borislav Lester 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).

  • Brick laying tools
    Patent number: 5125814
    Abstract: A mortar course tool has a tray with a sliding plate which slides under a rectangular open frame surrounding the plate to close a mortar wafer dropping gap formed by the frame while the mortar is being carried to a brick wall; the sliding plate slides away from the frame to open the gap dropping a wafer of mortar of brick top area and mortar course thickness. Runners behind and connected to the frame telescope into sleeves behind and connected to the plate in an arrangement clear of mortar to enable frame and plate to be moved towards and away from each other by means of a cross bar pull handle on each.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: June 30, 1992
    Inventor: Borislav Lester