Granted Patent
Utility
US 4,371,385 · App. 06/258,423
Deaerating liquid
Inventor:
Steven H. Johnson
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Apr 28, 1981
Inventor
Steven H. Johnson
Assignee (at issue)
Cobe 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.