Granted Patent
Utility
US 6,434,285 · App. 09/224,370
Fiber optic difference current sensor
Inventors:
James N. Blake, Glen A. Sanders
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Dec 31, 1998
Inventors
James N. Blake
Glen A. Sanders
Assignee (at issue)
NxtPhase Technologies, SRL
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.