Granted Patent
Utility
US 5,157,704 · App. 07/704,241
Monochromatic X-ray tube radiation with a screen of high atomic number for higher fluorescent radiation output
Inventor:
Geoffrey Harding
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: May 22, 1991
Inventor
Geoffrey Harding
Assignee (at issue)
U.S. Philips 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.