Granted Patent
Utility
US 5,990,661 · App. 09/070,331
Circulating current battery heater
Inventors:
Cyrus N. Ashtiani, Thomas A. Stuart
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Apr 30, 1998
Inventors
Cyrus N. Ashtiani
Thomas A. Stuart
Assignees (at issue)
Daimlerchrysler AG
The University of Toledo
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.