Granted Patent
Utility
US 5,767,744 · App. 08/753,185
Lightweight fixed frequency discontinuous resonant power supply for audio amplifiers
Inventors:
Gordon L. Irwin, Patrick H. Quilter
Patented Case
View Patent ↗
Granted: Jun 16, 1998
Filed: Nov 21, 1996
Inventors
Gordon L. Irwin
Patrick H. Quilter
Assignee (at issue)
QSC Audio Products, LLC
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.