Granted Patent
Utility
US 6,778,636 · App. 10/165,262
Adjustable x-ray beam collimator for an x-ray tube
Inventor:
Gregory C. Andrews
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Jun 6, 2002
Inventor
Gregory C. Andrews
Assignee (at issue)
VARIAN 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.