Granted Patent
Utility
US 6,525,951 · App. 10/054,785
Simplified wye connected 3-phase to 9-phase auto-transformer
Inventor:
Derek A. Paice
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Jan 25, 2002
Inventor
Derek A. Paice
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.