Granted Patent
Utility
US 4,981,654 · App. 07/191,202
Unitary centrifuge tube and separable dispensing receptacle
Inventors:
David H. Kuntz, Louis Muller
Patented Case
View Patent ↗
Granted: Jan 1, 1991
Filed: May 6, 1988
Inventors
David H. Kuntz
Louis Muller
Assignee (at issue)
Davstar Industries, 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.