Granted Patent
Utility
US 6,198,251 · App. 09/131,428
Method for sequentially charging batteries in situ
Inventor:
Frank L. Landon
Patented Case
View Patent ↗
Granted: Mar 6, 2001
Filed: Aug 10, 1998
Inventor
Frank L. Landon
Assignee (at issue)
Fluor Corporation
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.