Granted Patent
Utility
US 4,501,989 · App. 06/445,628
Radiation detecting arrangement for counting an ionizing radiation
Inventor:
Dieter von der Brake
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Nov 30, 1982
Inventor
Dieter von der Brake
Assignee (at issue)
International Standard Electric 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.