Granted Patent
Utility
US 5,220,502 · App. 07/597,492
Automatic blood pressure measurement in hyperbaric chamber
Inventors:
Zhenhai QIAN, Robert Cousineau
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Oct 10, 1990
Inventors
Zhenhai QIAN
Robert Cousineau
Assignee (at issue)
CAS 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.