Granted Patent
Utility
US 4,830,013 · App. 07/008,937
Intravascular blood parameter measurement system
Inventor:
Thomas P. Maxwell
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Jan 30, 1987
Inventor
Thomas P. Maxwell
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.