Granted Patent
Utility
US 6,702,980 · App. 10/136,750
Annealing apparatus
Inventor:
Richard Riggs
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Apr 30, 2002
Inventor
Richard Riggs
Assignee (at issue)
Martinrea Industries, 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.