Granted Patent
Utility
US 4,210,131 · App. 05/928,043
Artificial sphincter with collection bag
Inventor:
Alfred R. Perlin
Patented Case
View Patent ↗
Granted: Jul 1, 1980
Filed: Jul 26, 1978
Inventor
Alfred R. Perlin
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.