Granted Patent
Utility
US 4,951,669 · App. 07/229,703
Blood parameter measurement system
Inventors:
Thomas P. Maxwell, Thomas G. Hacker
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Aug 8, 1988
Inventors
Thomas P. Maxwell
Thomas G. Hacker
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.