creator Gray, Allan Poe Antifertility drug complexes which have enhanced effectiveness and prolonged release of the antifertility drug. The complex includes an antifertility drug, a polybasic acid and a polyvalent metal ion. The antifertility drug is in the form of a basic amine derivative. Submitted by Aric Ahrens (ahrens@iit.edu) on 2011-11-11T20:45:59Z No. of bitstreams: 1 3968105.pdf: 151279 bytes, checksum: 33b9d480920ac94de961f1620dcc4bea (MD5) Made available in DSpace on 2011-11-11T20:45:59Z (GMT). No. of bitstreams: 1 3968105.pdf: 151279 bytes, checksum: 33b9d480920ac94de961f1620dcc4bea (MD5) Previous issue date: 1976-07-06 IIT Research Institute 2009-05-04 1976-07-06 3,968,105 http://hdl.handle.net/10560/2328 en United States Patent Patent reformatted digital application/pdf No Copyright - United States http://rightsstatements.org/page/NoC-US/1.0/ Open Access