Granted Patent
Utility
US 6,369,840 · App. 09/265,515
Multi-layered online calendaring and purchasing
Inventors:
Theodore H. Barnett, Anthony A. Espinoza, Vengpui Louis Lao, David C. Sobotka, Andrew Zaeske
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Mar 10, 1999
Inventors
Theodore H. Barnett
Anthony A. Espinoza
Vengpui Louis Lao
David C. Sobotka
Andrew Zaeske
Assignee (at issue)
America Online, 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.