Granted Patent
Utility
US 4,245,777 · App. 06/070,946
Centrifuge apparatus
Inventor:
Andre C. Lavanchy
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Aug 30, 1979
Inventor
Andre C. Lavanchy
Assignee (at issue)
Pennwalt Corporation
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.