Granted Patent
Utility
US 5,135,490 · App. 07/633,266
Method and system for effecting wedging of a bronchoalveolar lavage catheter
Inventor:
Richard D. Strickland
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Dec 21, 1990
Inventor
Richard D. Strickland
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.