Granted Patent
Utility
US 5,997,234 · App. 08/841,245
Silicon feed system
Inventor:
Joseph R. Norris
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Apr 29, 1997
Inventor
Joseph R. Norris
Assignee (at issue)
Ebara Solar, 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.