Granted Patent
Utility
US 5,779,666 · App. 08/661,374
Method and apparatus for uninterrupted delivery of radiographic dye
Inventor:
Paul S. Teirstein
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Jun 11, 1996
Inventor
Paul S. Teirstein
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.