Granted Patent
Utility
US 5,757,928 · App. 08/729,328
Audio amplifier arrangement for more than two reproduction channels
Inventor:
Reinhard Schaar
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Oct 15, 1996
Inventor
Reinhard Schaar
Assignee (at issue)
Nokia Technology
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.