Granted Patent
Utility
US 6,552,919 · App. 09/952,566
Converter utilizing pulse duration modulation and ripple control
Inventor:
Douglas A. Bors
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Sep 10, 2001
Inventor
Douglas A. Bors
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.