Granted Patent
Utility
US 4,953,932 · App. 07/343,754
Optical slip ring
Inventor:
Alexander Mihich
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Apr 25, 1989
Inventor
Alexander Mihich
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.