Granted Patent
Utility
US 6,066,594 · App. 09/157,072
Identification document
Inventors:
Valerie Gunn, Janet M. Schaffner
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Sep 18, 1998
Inventors
Valerie Gunn
Janet M. Schaffner
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.