Granted Patent
Utility
US 4,362,372 · App. 06/244,964
Focusing system and method with adjustment for lens depth of focus
Inventor:
Kenneth C. Kiesel
Patented Case
View Patent ↗
Granted: Dec 7, 1982
Filed: Mar 18, 1981
Inventor
Kenneth C. Kiesel
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.