Granted Patent
Utility
US 6,774,609 · App. 10/192,778
Multi-voltage inverter circuits for charging a capacitive load
Inventor:
George Heftman
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jul 9, 2002
Inventor
George Heftman
Assignee (at issue)
Nicotech Limited
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.