Granted Patent
Utility
US 5,424,933 · App. 08/176,523
Resonant forward converter circuit with control circuit for controlling switching transistor on and off times
Inventor:
Lewis Illingworth
Patented Case
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Granted: Jun 13, 1995
Filed: Jan 3, 1994
Inventor
Lewis Illingworth
Assignee (at issue)
Avionic Instruments, 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.