Granted Patent
Utility
US 4,876,555 · App. 07/168,468
Resonance label and method for its fabrication
Inventor:
Paul Jorgensen
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Mar 15, 1988
Inventor
Paul Jorgensen
Assignee (at issue)
Durgo AG
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.