Crystalline fumaric acid salts of 9,9-alkylene-3,7-diazabicyclononane compounds and pharmaceutical compositions containing them

Granted: Jun 28, 1994 Filed: Nov 23, 1992

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.