Granted Patent
Utility
US 4,553,091 · App. 06/464,285
Automatic vertical calibration method and system for an oscilloscope
Inventor:
L. Rodney Bristol
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Feb 7, 1983
Inventor
L. Rodney Bristol
Assignee (at issue)
Tektronix, 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.