Granted Patent
Utility
US 6,757,185 · App. 10/168,438
Method and control circuitry for a three-phase three-level boost-type rectifier
Inventor:
Manuel Roberto Rojas Romero
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Oct 18, 2002
Inventor
Manuel Roberto Rojas Romero
Assignee (at issue)
E.E.S. Sistemas de Energia Ltda.
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.