Granted Patent
Utility
US 5,925,879 · App. 08/853,402
Oil and gas well packer having fiber optic Bragg Grating sensors for downhole insitu inflation monitoring
Inventor:
Arthur D. Hay
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: May 9, 1997
Inventor
Arthur D. Hay
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.