Granted Patent
Utility
US 5,369,811 · App. 08/003,536
Vacuum toilet system with odor filter
Inventor:
Gerard Serre
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Jan 13, 1993
Inventor
Gerard Serre
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.