Granted Patent
Utility
US 4,581,598 · App. 06/622,292
Segmented toroidal air-core transformer
Inventor:
Theodore H. York
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Jun 19, 1984
Inventor
Theodore H. York
Assignee (at issue)
Westinghouse Electric Company 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.