Patents by Inventor G. Mason Cadwell, Jr.

G. Mason Cadwell, Jr. 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).

  • Freon recovery workstation
    Patent number: 5276938
    Abstract: A freon recovery workstation including a collection tray for collecting and recovering liquid freon from the work area, forced air passageways disposed above and below the work area for drawing and receiving freon vapor, a freon-adsorbing unit connected to the forced air passageways for adsorbing and recovering the freon vapor, and a freon applicator in the form of a hand tool for aiming and regulating the use of freon.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: January 11, 1994
    Assignee: United States Environmental Services, Inc.
    Inventors: G. Mason Cadwell, Jr., Glenn S. Holmes