Granted Patent
Utility
US 5,976,365 · App. 08/195,397
Biomass growth control apparatus for fluid bed biological reactor
Inventor:
Peter J. Petit
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Feb 14, 1994
Inventor
Peter J. Petit
Assignee (at issue)
Envirex, 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.