Patents by Inventor Barry Lee Pfister

Barry Lee Pfister 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).

  • Combination leveling and grade checking tool
    Patent number: 4114220
    Abstract: A hand tool particularly useful for concrete work and for providing the combined operations of raking, leveling and setting grade. The tool includes a base plate, a vertically upstanding handle and an adjustable sight collar slidably mounted on the handle with a sight groove and adjustable thumb screw to allow for accurate grade checking.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: September 19, 1978
    Inventor: Barry Lee Pfister