Patents by Inventor John D. Troup

John D. Troup 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).

  • Device for handling patients
    Patent number: D289274
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: April 14, 1987
    Inventor: John D. Troup