Granted Patent
Utility
US 4,617,939 · App. 06/745,291
Tomography
Inventors:
Brian Brown, David C. Barber, Ian Leslie Freeston
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Jun 14, 1985
Inventors
Brian Brown
David C. Barber
Ian Leslie Freeston
Assignee (at issue)
The University of Sheffield
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.