Granted Patent
Utility
US 4,678,916 · App. 06/827,509
Dosimeter
Inventor:
Ian Thomson
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Feb 10, 1986
Inventor
Ian Thomson
Assignee (at issue)
Thomson & Nielsen Electronics Ltd.
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.