Granted Patent
Utility
US 5,907,910 · App. 08/847,398
Method for cyclone conversion for a fluidized bed
Inventor:
William L. Heumann
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Apr 24, 1997
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.