Granted Patent
Utility
US 6,829,022 · App. 10/327,980
Chuck for exposure apparatus
Inventor:
Yong Hun Kim
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Dec 26, 2002
Inventor
Yong Hun Kim
Assignee (at issue)
LG Philips LCD 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.