Granted Patent
Utility
US 4,561,008 · App. 05/870,484
Ballasted, gate controlled semiconductor device
Inventor:
Hans W. Becke
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Jan 18, 1978
Inventor
Hans W. Becke
Assignee (at issue)
RCA Corporation
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.