Granted Patent
Utility
US 5,010,335 · App. 07/527,684
Optical port multiplexer for electric metering equipment
Inventors:
Richard Coppola, Farrokh Khandaghabadi
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: May 21, 1990
Inventors
Richard Coppola
Farrokh Khandaghabadi
Assignee (at issue)
Schlumberger Industires, S.A.
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.