Granted Patent
Utility
US 6,692,621 · App. 09/979,973
Apparatus for hydrogen production
Inventor:
Dennis Chancellor
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Jun 4, 2002
Inventor
Dennis Chancellor
Assignee (at issue)
NATE International
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.