Patents by Inventor Petrina L. Havens

Petrina L. Havens 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: 5184745
    Abstract: A storage container set wherein the individual containers are sized and configured to be nestable one within the other during storage of the set. Each container includes a rim depending downwardly from the underside of the container and having a plurality of vertical slots formed therein. The container lid is removably affixed to the underside of the container during storage of the container set in the nested condition by way of an interlocking arrangement between the rim and an annular groove disposed in a face of the lid, or interlocking buttons or recesses.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: February 9, 1993