Granted Patent
Utility
US 6,446,004 · App. 09/796,864
System and method for implementing proximity or location driven activities
Inventors:
Kevin Cao, Daniel A. Ford, Reiner Kraft
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Feb 28, 2001
Inventors
Kevin Cao
Daniel A. Ford
Reiner Kraft
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.