Granted Patent
Utility
US 4,848,885 · App. 07/191,575
Preobjective scanning system
Inventor:
Peter P. Clark
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: May 9, 1988
Inventor
Peter P. Clark
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.