Granted Patent
Utility
US 6,734,669 · App. 10/167,166
Digital demodulation of an eddy current signal
Inventor:
Estell Lopez
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Jun 11, 2002
Inventor
Estell Lopez
Assignee (at issue)
Zetec, 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.