Granted Patent
Utility
US 5,272,071 · App. 07/893,447
Method for the modification of the expression characteristics of an endogenous gene of a given cell line
Inventor:
Scott C. Chappel
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: May 28, 1992
Inventor
Scott C. Chappel
Assignee (at issue)
APPLIED RESEARCH SYSTEMS ARS HOLDING N.V.
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.