Granted Patent
Utility
US 6,709,778 · App. 09/972,634
Electrochemical conversion system
Inventor:
Lonnie G. Johnson
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Oct 9, 2001
Inventor
Lonnie G. Johnson
Assignee (at issue)
Johnson Electro Mechanical Systems, LLC
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.