Granted Patent
Utility
US 5,917,492 · App. 08/829,570
Method and system for displaying an expandable tree structure in a data processing system graphical user interface
Inventors:
Thomas William Bereiter, Doron Gan
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Mar 31, 1997
Inventors
Thomas William Bereiter
Doron Gan
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.