Granted Patent
Utility
US 5,771,844 · App. 08/628,004
Cyclone separator having increased gas flow capacity
Inventor:
David H. Dietz
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Apr 4, 1996
Inventor
David H. Dietz
Assignee (at issue)
Foster Wheeler Development Corp.
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.