Granted Patent
Utility
US 6,145,136 · App. 08/886,649
Drain assembly
Inventors:
Bernard Parisi, David J. Burke
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Jul 1, 1997
Inventors
Bernard Parisi
David J. Burke
Assignee (at issue)
COMPONENT HARDWARE GROUP, 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.