Granted Patent
Utility
US 4,654,532 · App. 06/773,937
Apparatus for improving the numerical aperture at the input of a fiber optics device
Inventor:
Tomas B. Hirschfeld
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Sep 9, 1985
Inventor
Tomas B. Hirschfeld
Assignee (at issue)
ORD Corp.
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.