Granted Patent
Utility
US 6,768,821 · App. 10/291,560
Sensing device with identifier
Inventors:
Kia Silverbrook, Paul Lapstun, Simon Robert Walmsley
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Nov 12, 2002
Inventors
Kia Silverbrook
Paul Lapstun
Simon Robert Walmsley
Assignee (at issue)
Silverbrook Research Pty Ltd
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.