Patents by Inventor Lawrence Robert Knapp

Lawrence Robert Knapp 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).

  • Patent number: 4031906
    Abstract: A unitary compact water pipe construction wherein a chamber is provided in the solid unitary pipe body and the pipe stem bore communicates with this chamber. A liquid container having a top opening or mouth is provided in sealed engagement with the chamber such that the interior of the container is exposed to the chamber in a sealed relationship, and a tube communicates the interior of the pipe bowl with the interior of the container. Portions of the container are transparent so that the interior of the container is revealed through the walls of the unitary pipe body, and an access is provided to gain access to the interior of the container in order to fill the same with water or some other desired liquid.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: June 28, 1977
    Inventor: Lawrence Robert Knapp