Granted Patent
Utility
US 4,507,640 · App. 06/444,637
High frequency transformer
Inventors:
Edward L. Rich, Yucel Y. Yalim
Patented Case
View Patent ↗
Granted: Mar 26, 1985
Filed: Nov 26, 1982
Inventors
Edward L. Rich
Yucel Y. Yalim
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.