Granted Patent
Utility
US 4,516,845 · App. 06/605,618
Security control system and method for identification card cameras
Inventors:
Linda L. Blakely, John Carl Goodman, David Bruce Walker
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Apr 30, 1984
Inventors
Linda L. Blakely
John Carl Goodman
David Bruce Walker
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.