Granted Patent
Utility
US 6,222,322 · App. 08/925,931
Ballast with lamp abnormal sensor and method therefor
Inventor:
Tom Stack
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Sep 8, 1997
Inventor
Tom Stack
Assignees (at issue)
Q Technology, Inc.
New Anthony, 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.