Granted Patent
Utility
US 5,218,655 · App. 07/890,975
Article comprising an optical waveguide with in-line refractive index grating
Inventor:
Victor Mizrahi
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: May 29, 1992
Inventor
Victor Mizrahi
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.