Granted Patent
Utility
US 6,344,916 · App. 09/658,448
Method and device for measuring depth of field
Inventor:
Chui-Kuei Chiu
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Sep 8, 2000
Inventor
Chui-Kuei Chiu
Assignee (at issue)
Umax Data Systems, Inc.
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.