Granted Patent
Utility
US 5,345,620 · App. 08/037,756
Composting toilet
Inventor:
Henric Sundberg
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Mar 26, 1993
Inventor
Henric Sundberg
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.