Granted Patent
Utility
US 5,681,676 · App. 08/121,045
Registration method
Inventors:
Stephen J. Telfer, Michael J. Zuraw
Patented Case
View Patent ↗
Granted: Oct 28, 1997
Filed: Oct 20, 1993
Inventors
Stephen J. Telfer
Michael J. Zuraw
Assignee (at issue)
Polaroid 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.