Granted Patent
Utility
US 5,319,978 · App. 07/907,331
Optical pressure transducer
Inventor:
Christopher P. Grudzien, Jr.
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Jul 1, 1992
Inventor
Christopher P. Grudzien, Jr.
Assignee (at issue)
Dynisco, Inc.
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.