Granted Patent
Utility
US 4,367,047 · App. 06/210,956
Apparatus for the detection of downlines on coated web material
Inventor:
John B. Ikin
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Nov 28, 1980
Inventor
John B. Ikin
Assignee (at issue)
Ciba-Geigy
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.