Granted Patent
Utility
US 4,307,074 · App. 06/075,300
Novel reagent
Inventors:
Richard Barner, Walter Boguth
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Sep 13, 1979
Inventors
Richard Barner
Walter Boguth
Assignee (at issue)
HOFFMANN-LA ROCHE 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.