Granted Patent
Utility
US 4,655,197 · App. 06/445,793
Lavage system with variable frequency, flow rate and pressure
Inventor:
Robert W. Atkinson
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Dec 1, 1982
Inventor
Robert W. Atkinson
Assignee (at issue)
Snyder Laboratories, 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.