Granted Patent
Utility
US 5,884,302 · App. 08/786,109
System and method to answer a question
Inventor:
Chi Fai Ho
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Jan 17, 1997
Inventor
Chi Fai Ho
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.