Granted Patent
Utility
US 5,175,508 · App. 07/802,686
Voltage-controlled amplifier using operational amplifier
Inventors:
Randal R. Gingrich, Nicholas Lawrence Difiore, Max H. Behrens
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Dec 5, 1991
Inventors
Randal R. Gingrich
Nicholas Lawrence Difiore
Max H. Behrens
Assignee (at issue)
Ford Motor Company
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.