Granted Patent
Utility
US 6,467,402 · App. 09/834,230
Fossil fuel-fired boilerless steamer
Inventors:
Mark J. Khinkis, James T. Cole, Donald E. Fritzsche, M. Frank G. Johnson
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Apr 12, 2001
Inventors
Mark J. Khinkis
James T. Cole
Donald E. Fritzsche
M. Frank G. Johnson
Assignee (at issue)
Gas Research Institute
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.