Granted Patent
Utility
US 6,216,539 · App. 09/197,898
Equipment setup for ultrasonic monitoring
Inventors:
William S. Johnson, Rexford A. Battenberg
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Nov 23, 1998
Inventors
William S. Johnson
Rexford A. Battenberg
Assignee (at issue)
CSI Technology Co., Ltd.
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.