Granted Patent
Utility
US 4,492,428 · App. 06/408,713
Coated optical fiber
Inventor:
Alvin C. Levy
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Aug 16, 1982
Inventor
Alvin C. Levy
Assignee (at issue)
AT&T Bell Laboratories
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.