Granted Patent
Utility
US 5,628,012 · App. 08/441,903
Method and apparatus for querying a database containing disjunctive information
Inventor:
Leonid Libkin
Patented Case
View Patent ↗
Granted: May 6, 1997
Filed: May 16, 1995
Inventor
Leonid Libkin
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.