Granted Patent
Utility
US 6,370,973 · App. 09/580,009
Device for removing slag samples
Inventors:
Hartmut Wunsch, Gerhard Wünsch
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: May 26, 2000
Inventors
Hartmut Wunsch
Gerhard Wünsch
Assignee (at issue)
MIDWEST INSTRUMENT COMPANY
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.