Granted Patent
Utility
US 4,780,476 · App. 06/945,773
Azoniaspironortropanol esters as asthma therapeutics and broncholytics
Inventors:
Wolf Grimminger, Karl P. Odenthal
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Dec 23, 1986
Inventors
Wolf Grimminger
Karl P. Odenthal
Assignee (at issue)
MADAUS GMBH
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.