Granted Patent
Utility
US 5,939,631 · App. 09/040,231
Low impedance single-ended tuning fork and method
Inventor:
Robert H. Moore
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Mar 13, 1998
Inventor
Robert H. Moore
Assignee (at issue)
BEI Technologies, 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.