Granted Patent
Utility
US 4,964,063 · App. 07/244,365
System and method for frame and unit-like symbolic access to knowledge represented by conceptual structures
Inventor:
John W. Esch
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: Sep 15, 1988
Inventor
John W. Esch
Assignee (at issue)
Unisys 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.