Granted Patent
Utility
US 6,503,322 · App. 09/691,994
Electrical resistance heater and method for crystal growing apparatus
Inventors:
Richard G. Schrenker, William L. Luter
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Oct 19, 2000
Inventors
Richard G. Schrenker
William L. Luter
Assignee (at issue)
MEMC Electronic Materials, 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.