Granted Patent
Utility
US 5,089,997 · App. 07/608,260
Ultrasonic energy detector with frequency and amplitude indications and background noise reduction
Inventor:
Joseph P. Pecukonis
Patented Case
View Patent ↗
Granted: Feb 18, 1992
Filed: Nov 2, 1990
Inventor
Joseph P. Pecukonis
Assignee (at issue)
Pasar, 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.