Granted Patent
Utility
US 4,975,248 · App. 06/919,404
Kit for obtaining a digoxin concentrate from a serum sample
Inventors:
Pyare Khanna, Roberta D. Ernst, Anne J. Stone
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Oct 16, 1986
Inventors
Pyare Khanna
Roberta D. Ernst
Anne J. Stone
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.