Patents by Inventor David H Slack

David H Slack 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).

  • Cart with trolley wheels
    Patent number: D391030
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: February 17, 1998
    Inventor: David H Slack