Granted Patent
Utility
US 5,289,221 · App. 07/984,697
Zoom lens assembly for a zoom camera
Inventor:
Yongkyoo Yoon
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: Dec 3, 1992
Inventor
Yongkyoo Yoon
Assignee (at issue)
Samsung Aerospace Industries, 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.