Granted Patent
Utility
US 4,913,161 · App. 07/137,275
Bag-tilt indicator on urine bag
Inventors:
Frank K. Villari, Brian H. Silver
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Dec 23, 1987
Inventors
Frank K. Villari
Brian H. Silver
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.