Granted Patent
Utility
US 4,807,638 · App. 07/111,699
Noninvasive continuous mean arterial blood prssure monitor
Inventor:
Bohumir Sramek
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Oct 21, 1987
Inventor
Bohumir Sramek
Assignee (at issue)
BoMed Medical Manufacturing, Ltd.
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.