Granted Patent
Utility
US 6,622,921 · App. 09/318,609
Identification element
Inventors:
Richard Altwasser, David Robson
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: May 26, 1999
Inventors
Richard Altwasser
David Robson
Assignee (at issue)
Meto International GmbH
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.