Granted Patent
Utility
US 4,745,884 · App. 07/055,173
Fluidized bed steam generating system
Inventor:
E. James Coulthard
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: May 28, 1987
Inventor
E. James Coulthard
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.