Granted Patent
Utility
US 4,535,273 · App. 06/641,633
Transformerless switching circuit for driving a horizontal output transistor
Inventor:
Richard W. Midland
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Aug 17, 1984
Inventor
Richard W. Midland
Assignee (at issue)
Zenith Electronics 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.