Granted Patent
Utility
US 5,389,840 · App. 07/974,129
Complementary analog multiplier circuits with differential ground referenced outputs and switching capability
Inventor:
Ronald N. Dow
Patented Case
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Granted: Feb 14, 1995
Filed: Nov 10, 1992
Inventor
Ronald N. Dow
Assignee (at issue)
Elantec, Inc.
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.