Granted Patent
Utility
US 4,832,846 · App. 07/228,289
Septic tank baffle
Inventor:
Norman W. Gavin
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Aug 4, 1988
Inventor
Norman W. Gavin
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.