Granted Patent
Utility
US 5,877,426 · App. 08/883,858
Bourdon tube pressure gauge with integral optical strain sensors for measuring tension or compressive strain
Inventors:
Arthur D. Hay, Robert J. Maron, James Dunphy, Phillip E. Pruett
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Jun 27, 1997
Inventors
Arthur D. Hay
Robert J. Maron
James Dunphy
Phillip E. Pruett
Assignee (at issue)
CiDRA 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.