Granted Patent
Utility
US 4,727,031 · App. 06/669,288
Nutrient for stimulating aerobic bacteria
Inventors:
Richard A. Brown, Robert D. Norris
Patented Case
View Patent ↗
Granted: Feb 23, 1988
Filed: Nov 8, 1984
Inventors
Richard A. Brown
Robert D. Norris
Assignee (at issue)
International Technology Group
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.