Patents by Inventor Henri A. Tengvall

Henri A. Tengvall 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).

  • Case for holding hand tools
    Patent number: D347114
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: May 24, 1994
    Inventor: Henri A. Tengvall