Granted Patent
Utility
US 6,404,800 · App. 09/622,797
Charging material preheater with replaceable shaft wall portions
Inventor:
Gerhard Fuchs
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Nov 13, 2000
Inventor
Gerhard Fuchs
Assignee (at issue)
Arcmet Technologie GmbH
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.