Granted Patent
Utility
US 4,329,281 · App. 06/106,347
Hapten compositions
Inventors:
James Gordon Christenson, Benjamin Pecherer
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Dec 21, 1979
Inventors
James Gordon Christenson
Benjamin Pecherer
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.