Granted Patent
Utility
US 4,680,164 · App. 06/756,860
Centrifugal analyzer
Inventor:
Norman Kelln
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Jul 18, 1985
Inventor
Norman Kelln
Assignee (at issue)
Fisher Scientific Company, L.L.C.
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.