Granted Patent
Utility
US 4,422,140 · App. 06/183,451
Monitoring means for industrial process plants
Inventor:
Albert B. Keats
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Sep 2, 1980
Inventor
Albert B. Keats
Assignee (at issue)
United Kingdom Atomic Energy Authority
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.