Granted Patent
Utility
US 5,488,449 · App. 08/180,082
Infinite-distance detecting circuit for an auto-focus system
Inventor:
Ho-gul Joo
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Jan 11, 1994
Inventor
Ho-gul Joo
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.