Granted Patent
Utility
US 4,387,848 · App. 05/839,156
Centrifuge assembly
Inventors:
Robert M. Kellogg, Alfred P. Mulzet
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Oct 3, 1977
Inventors
Robert M. Kellogg
Alfred P. Mulzet
Assignee (at issue)
International Business Machines 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.