Granted Patent
Utility
US 6,332,580 · App. 09/454,157
Compact vehicle heating apparatus and method
Inventors:
Harold R. Enander, Thomas A. Acree
Patented Case
View Patent ↗
Granted: Dec 25, 2001
Filed: Nov 30, 1999
Inventors
Harold R. Enander
Thomas A. Acree
Assignee (at issue)
Vehicle System Co., Ltd.
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.