Granted Patent
Utility
US 6,166,495 · App. 09/413,924
Square wave ballast for mercury free arc lamp
Inventors:
P. Bruce Newell, Nanu Brates
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Oct 7, 1999
Inventors
P. Bruce Newell
Nanu Brates
Assignee (at issue)
OSRAM SYLVANIA 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.