Patents by Inventor James A. D. Halliwell

James A. D. Halliwell 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: D247726
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: April 18, 1978
    Inventor: James A. D. Halliwell