Granted Patent
Utility
US 4,930,167 · App. 07/249,513
Toilet with vortex flushing action
Inventor:
Myron J. Ament
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: Sep 26, 1988
Inventor
Myron J. Ament
Assignee (at issue)
Household Manufacturing, 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.