Granted Patent
Utility
US 4,309,637 · App. 06/093,238
Rotating anode X-ray tube
Inventor:
Richard W. Fetter
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: Nov 13, 1979
Inventor
Richard W. Fetter
Assignee (at issue)
EMI, LLC
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.