Granted Patent
Utility
US 5,231,021 · App. 07/866,362
Cloning and expressing restriction endonucleases and modification methylases from xanthomonas
Inventor:
Deb K. Chatterjee
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Apr 10, 1992
Inventor
Deb K. Chatterjee
Assignee (at issue)
LIFE TECHNOLOGIES CORPORATION
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.