Granted Patent
Utility
US 6,489,974 · App. 08/586,149
Buoy icon notification of object interface accessibility in multitasking computer environment
Inventors:
William J. Johnson, Larry M. Lachman, Michael Smith
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jan 11, 1996
Inventors
William J. Johnson
Larry M. Lachman
Michael Smith
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.