Granted Patent
Utility
US 5,268,298 · App. 07/691,801
System for delivering oxygen to a cell culture medium
Inventors:
Richard Fike, James M. Kubiak
Patented Case
View Patent ↗
Granted: Dec 7, 1993
Filed: Apr 26, 1991
Inventors
Richard Fike
James M. Kubiak
Assignee (at issue)
LIFE TECHNOLOGIES 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.