Granted Patent
Utility
US 5,161,471 · App. 07/791,902
Apparatus for reburning ash material of a previously burned primary fuel
Inventor:
Stanley J. Piekos
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Nov 13, 1991
Inventor
Stanley J. Piekos
Assignee (at issue)
Riley Stoker Corporation
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.