Granted Patent
Utility
US 4,957,364 · App. 07/339,845
Helical bend proof testing of optical fibers
Inventor:
Ronald B. Chesler
Patented Case
View Patent ↗
Granted: Sep 18, 1990
Filed: Apr 18, 1989
Inventor
Ronald B. Chesler
Assignee (at issue)
Hughes Aircraft Company
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.