Granted Patent
Utility
US 4,906,581 · App. 07/260,448
Method of quality control for hollow fiber gas transfer cells
Inventors:
Daniel A. Baker, Louis C. Cosentino, LeRoy J. Fischbach, Robert T. Hall, II, Anatol M. Hnojewyj, Scott R. Vagle, Perry L. Blackshear, Jr.
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Oct 20, 1988
Inventors
Daniel A. Baker
Louis C. Cosentino
LeRoy J. Fischbach
Robert T. Hall, II
Anatol M. Hnojewyj
Scott R. Vagle
Perry L. Blackshear, Jr.
Assignee (at issue)
MINNTECH 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.