Granted Patent
Utility
US 4,978,631 · App. 06/890,218
Current source with a process selectable temperature coefficient
Inventor:
Richard A. Blanchard
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Jul 25, 1986
Inventor
Richard A. Blanchard
Assignee (at issue)
SILICONIX INCORPORATED
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.