Granted Patent
Utility
US 4,286,155 · App. 06/044,195
Radioactive gas monitor
Inventor:
George R. Utting
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: May 31, 1979
Inventor
George R. Utting
Assignee (at issue)
Victoreen, 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.