Granted Patent
Utility
US 4,847,203 · App. 07/090,906
Fermentation vessels
Inventor:
Nigel Smart
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Aug 31, 1987
Inventor
Nigel Smart
Assignee (at issue)
Allelix 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.