Granted Patent
Utility
US 4,939,152 · App. 07/305,890
Cell culture vial
Inventors:
Stephen M. Barr, Paul A. Rohlf
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Feb 2, 1989
Inventors
Stephen M. Barr
Paul A. Rohlf
Assignee (at issue)
Syntex (U.S.A.) LLC
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.