Granted Patent
Utility
US 6,579,859 · App. 10/165,917
Control of protozoa and protozoan cysts that harbor legionella
Inventors:
Wilson K. Whitekettle, Gloria Jean Tafel
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Jun 10, 2002
Inventors
Wilson K. Whitekettle
Gloria Jean Tafel
Assignee (at issue)
GE Betz, 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.