Granted Patent
Utility
US 3,981,197 · App. 05/589,714
External blood pressure transducer
Inventors:
Clement E. Lieber, Lawrence W. Blake
Patented Case
View Patent ↗
Granted: Sep 21, 1976
Filed: Jun 23, 1975
Inventors
Clement E. Lieber
Lawrence W. Blake
Assignee (at issue)
American Hospital Supply Corp.
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.