Granted Patent
Utility
US 6,807,220 · App. 10/444,128
Retention mechanism for heating coil of high temperature diffusion furnace
Inventor:
Kevin B. Peck
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: May 23, 2003
Inventor
Kevin B. Peck
Assignee (at issue)
MRL 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.