Granted Patent
Utility
US 4,739,074 · App. 06/821,293
Adamantane spiro-pyrrolidine derivatives
Inventors:
Vassil S. Georgiev, George B. Mullen
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Jan 22, 1986
Inventors
Vassil S. Georgiev
George B. Mullen
Assignee (at issue)
Pennwalt Corporation
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.