Granted Patent
Utility
US 4,730,621 · App. 06/804,242
Blood pressure measurement
Inventor:
Frank D. Stott
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Dec 3, 1985
Inventor
Frank D. Stott
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.