Granted Patent
Utility
US 5,124,739 · App. 07/609,401
Real time pseudofocus exposure control system
Inventor:
John J. Kelleher
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Nov 5, 1990
Inventor
John J. Kelleher
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.