Granted Patent
Utility
US 4,335,384 · App. 06/110,892
Logarithmic amplifier calibration means
Inventor:
John Roos
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Jan 10, 1980
Inventor
John Roos
Assignee (at issue)
Bunker Ramo Corporation
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.