Granted Patent
Utility
US 4,714,829 · App. 06/841,019
Fibre optic sensing device and method
Inventors:
Arthur H. Hartog, David Neil Payne
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Mar 17, 1986
Inventors
Arthur H. Hartog
David Neil Payne
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.