Granted Patent
Utility
US 6,633,139 · App. 09/899,769
Converter for converting an AC power main voltage to a voltage suitable for driving a lamp
Inventor:
Andrew Piaskowski
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: Jul 2, 2001
Inventor
Andrew Piaskowski
Assignee (at issue)
Groupe Delta xfo 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.