Granted Patent
Utility
US 5,082,341 · App. 07/638,203
Integrated optical device with zero-gap and well-spaced regions
Inventor:
Robert G. Walker
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: Jan 4, 1991
Inventor
Robert G. Walker
Assignee (at issue)
GEC-Marconi Ltd.
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.