Granted Patent
Utility
US 6,270,921 · App. 09/488,217
Air recovery battery
Inventors:
Alexander Kaplan, Viet Vu
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Jan 19, 2000
Inventors
Alexander Kaplan
Viet Vu
Assignee (at issue)
The Gillette Company 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.