Granted Patent
Utility
US 6,531,884 · App. 09/940,329
Diagnostics for piezoelectric sensor
Inventor:
Lowell A. Kleven
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Aug 27, 2001
Inventor
Lowell A. Kleven
Assignee (at issue)
ROSEMOUNT 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.