Type II restriction endonuclease, Hpy188I, obtainable from helicobacter pylori J188 and a process for producing the same

Granted: Jul 10, 2001 Filed: Sep 10, 1999

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.