Patents by Inventor David P. Kaufmann

David P. Kaufmann 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: 3967773
    Abstract: A container includes a tubular body section having a plurality of parallel and equally spaced encircling tear lines for tearing of the successive sections from the rest of the container. A telescoping cover closes an open top. The cover has a side wall of the depth of one section and a top wall projecting inwardly into the side wall with an inclined inner side wall so as to project into the container and also define a stacking recess. The bottom wall conforms to the stacking recess and permits convenient stacking. The inward projection of the cover permits the effective minimizing of the air space within the container as the material is removed.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: July 6, 1976
    Inventor: David P. Kaufmann