Granted Patent
Utility
US 5,490,503 · App. 08/235,479
Suction catheter having multiple valves and collet assembly
Inventor:
William H. Hollister
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Apr 29, 1994
Inventor
William H. Hollister
Assignee (at issue)
Smiths Industries Medical Systems, Inc.
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.