Granted Patent
Utility
US 6,563,380 · App. 09/888,146
Dual bridge amplifier
Inventor:
Jan Paulus Freerk Huijser
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jun 22, 2001
Inventor
Jan Paulus Freerk Huijser
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.