Granted Patent
Utility
US 4,881,091 · App. 07/318,959
Data card illumination arrangement
Inventor:
Donald G. Josephson
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Mar 6, 1989
Inventor
Donald G. Josephson
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.