Granted Patent
Utility
US 6,339,368 · App. 09/539,764
Circuit for automatically driving mechanical device at its resonance frequency
Inventor:
James W. Leith
Patented Case
View Patent ↗
Granted: Jan 15, 2002
Filed: Mar 31, 2000
Inventor
James W. Leith
Assignee (at issue)
Zilog, 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.