Granted Patent
Utility
US 5,607,852 · App. 08/347,345
Process for attenuated varicella zoster virus vaccine production
Inventors:
Philip J. Provost, David L. Krah, Paul A. Friedman
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Dec 5, 1994
Inventors
Philip J. Provost
David L. Krah
Paul A. Friedman
Assignee (at issue)
Merch & Co., 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.