Granted Patent
Utility
US 6,577,090 · App. 09/931,502
DC voltage level shifter
Inventor:
Fred A. Brown
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Aug 16, 2001
Inventor
Fred A. Brown
Assignee (at issue)
Comair Rotron 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.