Granted Patent
Utility
US 4,719,916 · App. 06/910,252
Intraintestinal bypass tube
Inventor:
Biagio Ravo
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Sep 19, 1986
Inventor
Biagio Ravo
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.