Granted Patent
Utility
US 4,733,931 · App. 06/791,456
Optical fiber coupler and method of making
Inventor:
Robert Fan
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: Oct 25, 1985
Inventor
Robert Fan
Assignee (at issue)
G&H Technology, Inc.
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.