Granted Patent
Utility
US 4,433,437 · App. 06/262,898
Method and apparatus for verifying security labels
Inventor:
Stephen D. Fantone
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: May 12, 1981
Inventor
Stephen D. Fantone
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.