Granted Patent
Utility
US 4,238,059 · App. 05/855,569
Stoma drainage appliance
Inventors:
William R. Caraway, Clarence M. Falkingham
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Nov 29, 1977
Inventors
William R. Caraway
Clarence M. Falkingham
Assignee (at issue)
Howmedica Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.