Granted Patent
Utility
US 5,086,445 · App. 07/581,998
Method and apparatus for referencing a cassette and/or an intensifying screen on a radiograph
Inventors:
Edwin W. Fisher, Christopher Schreiber, Douglas R. Walker
Patented Case
View Patent ↗
Granted: Feb 4, 1992
Filed: Sep 13, 1990
Inventors
Edwin W. Fisher
Christopher Schreiber
Douglas R. Walker
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.