Granted Patent
Utility
US 4,228,286 · App. 06/071,744
Intermediates for 11-[3-oxo-.omega.(2- and 3-furyl)-lower-alkyl]hexahydro-2,6-methano-3-benzazocines
Inventors:
Thomas R. Lewis, William F. Michne
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Aug 30, 1979
Inventors
Thomas R. Lewis
William F. Michne
Assignee (at issue)
Sterling Drug, 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.