Granted Patent
Utility
US 6,438,530 · App. 09/474,510
Software based stamp dispenser
Inventors:
Gary M. Heiden, Richard W. Heiden, Chunhua Li
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Dec 29, 1999
Inventors
Gary M. Heiden
Richard W. Heiden
Chunhua Li
Assignee (at issue)
Pitney Bowes 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.