Patents by Inventor Robert O. Blank

Robert O. Blank 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).

  • Canopener end
    Patent number: 3984045
    Abstract: A composite can having a tubular paperboard body and a metal end which includes a skirt encompassing a marginal portion of the can body.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: October 5, 1976
    Assignee: Container Corporation of America
    Inventor: Robert O. Blank