Granted Patent
Utility
US 6,530,779 · App. 10/126,332
Door assembly for rotary furnace
Inventors:
Richard S. Slade, Robert J. Garrett, David P. LaVelle, Lee Newton, Joseph Wojciechowski
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Apr 19, 2002
Inventors
Richard S. Slade
Robert J. Garrett
David P. LaVelle
Lee Newton
Joseph Wojciechowski
Assignee (at issue)
Imco Recycling, Inc.
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.