Granted Patent
Utility
US 5,053,747 · App. 07/403,259
Ultrasonic air-in-line detector self-test technique
Inventors:
John B. Slate, James L. Henke
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Sep 5, 1989
Inventors
John B. Slate
James L. Henke
Assignee (at issue)
Pacesetter Infusion, 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.