Granted Patent
Utility
US 4,492,234 · App. 06/279,744
Pressure measurement method
Inventor:
Edward J. Arkans
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Jul 2, 1981
Inventor
Edward J. Arkans
Assignee (at issue)
The Kendall Company LP
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.