Granted Patent
Utility
US 6,197,249 · App. 09/331,284
Apparatus for conducting gas through material to be sintered
Inventors:
Eero Väänänen, Lauri A. Mustikka
Patented Case
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Granted: Mar 6, 2001
Filed: Aug 23, 1999
Inventors
Eero Väänänen
Lauri A. Mustikka
Assignee (at issue)
Outokumpu Technology Oyj
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.