Granted Patent
Utility
US 6,319,636 · App. 09/471,972
Cell projection mask
Inventor:
Young M. Ham
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Dec 23, 1999
Inventor
Young M. Ham
Assignee (at issue)
Hyundai Electronics Industries 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.