Granted Patent
Utility
US 6,484,331 · App. 09/791,934
Waste and overflow system for a bathtub
Inventor:
Michael W. Minnick
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Feb 22, 2001
Inventor
Michael W. Minnick
Assignee (at issue)
OATEY CO.
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.