Patents by Inventor John Hamilton Price

John Hamilton Price 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).

  • Breathing mask
    Patent number: D250047
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: October 24, 1978
    Assignee: Chemetron Corporation
    Inventors: George Tom Lewis, John Hamilton Price