Granted Patent
Utility
US 6,424,997 · App. 09/237,886
Machine learning based electronic messaging system
Inventors:
Martin C. Buskirk, Frederick J. Damerau, David H. Johnson, Marguerite Raaen
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jan 27, 1999
Inventors
Martin C. Buskirk
Frederick J. Damerau
David H. Johnson
Marguerite Raaen
Assignee (at issue)
International Business Machines 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.