Granted Patent
Utility
US 5,612,003 · App. 08/544,883
Fluidized bed wtih cyclone
Inventor:
William L. Heumann
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Oct 18, 1995
Inventor
William L. Heumann
Assignee (at issue)
Fisher-Klosterman, 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.