Granted Patent
Utility
US 4,683,442 · App. 06/856,258
Operational amplifier circuit utilizing resistors trimmed by metal migration
Inventor:
Robert L. Vyne
Patented Case
View Patent ↗
Granted: Jul 28, 1987
Filed: Apr 28, 1986
Inventor
Robert L. Vyne
Assignee (at issue)
Motorola, 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.