Granted Patent
Utility
US 5,149,963 · App. 07/547,903
Fiber-optic position sensor including photovoltaic bi-cell
Inventor:
William L. Hassler, Jr.
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Jul 3, 1990
Inventor
William L. Hassler, Jr.
Assignee (at issue)
Parker-Hannifin 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.