Granted Patent
Utility
US 6,645,382 · App. 09/712,693
Energy-efficient head cell entry duct
Inventor:
George Wilson
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Nov 13, 2000
Inventor
George Wilson
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.