Granted Patent
Utility
US 6,800,113 · App. 09/892,654
Equipment for distribution and feeding of charge and fuel in shaft furnaces of rectangular cross section
Inventors:
Marcos de Albuquerque Contrucci, Pedro Henrique Carpinetti Costa
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Jun 28, 2001
Inventors
Marcos de Albuquerque Contrucci
Pedro Henrique Carpinetti Costa
Assignee (at issue)
Startec Iron LLC
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.