Granted Patent
Utility
US 4,925,919 · App. 07/205,423
Purified interleukin 2
Inventors:
Roland Mertelsmann, Karl Welte, Salvatore Venuta
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Jun 10, 1988
Inventors
Roland Mertelsmann
Karl Welte
Salvatore Venuta
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.