Granted Patent
Utility
US 6,652,678 · App. 09/913,469
AA6000 aluminum sheet method
Inventors:
Graeme John Marshall, Karl Albert Herbst, Martin Heinze, Richard Hamerton
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Oct 31, 2001
Inventors
Graeme John Marshall
Karl Albert Herbst
Martin Heinze
Richard Hamerton
Assignee (at issue)
Alcan International Limited
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.