Granted Patent
Utility
US 4,852,140 · App. 07/061,906
X-ray tube bearing arc suppressor
Inventor:
Mark Dax
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Jun 11, 1987
Inventor
Mark Dax
Assignee (at issue)
Siemens Medical Systems,Inc.
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.