Granted Patent
Utility
US 5,031,992 · App. 07/495,508
Multiple parallel channel rotary optical coupler
Inventor:
John Corcoran
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Mar 19, 1990
Inventor
John Corcoran
Assignee (at issue)
Ampex 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.