Granted Patent
Utility
US 6,228,255 · App. 09/122,000
Portable water treatment facility
Inventors:
Michael Peterson, Richard M. Russell, David H. Albright
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Jul 24, 1998
Inventors
Michael Peterson
Richard M. Russell
David H. Albright
Assignee (at issue)
Dialysis Systems, 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.