Granted Patent
Utility
US 5,428,847 · App. 08/242,732
Drain assembly
Inventors:
Edwin F. Atkins, Corrado Mangiafico
Patented Case
View Patent ↗
Granted: Jul 4, 1995
Filed: May 13, 1994
Inventors
Edwin F. Atkins
Corrado Mangiafico
Assignee (at issue)
KENNEY MANUFACTURING COMPANY
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.