Granted Patent
Utility
US 4,869,265 · App. 07/033,770
Biomedical pressure transducer
Inventor:
James A. McEwen
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Apr 3, 1987
Inventor
James A. McEwen
Assignee (at issue)
Western Clinical Engineering 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.