Granted Patent
Utility
US 4,305,404 · App. 06/139,322
Urine meter
Inventor:
William J. Dunn
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Apr 11, 1980
Inventor
William J. Dunn
Assignee (at issue)
The Kendall Company LP
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.