Granted Patent
Utility
US 6,234,788 · App. 09/433,859
Disk furnace for thermal processing
Inventor:
Chunghsin Lee
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Nov 4, 1999
Inventor
Chunghsin Lee
Assignee (at issue)
Applied Science & Technology, 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.