Granted Patent
Utility
US 6,477,220 · App. 09/205,687
Flexible penetration attachment for strainers
Inventor:
Adrian P. Wivagg
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Dec 4, 1998
Inventor
Adrian P. Wivagg
Assignee (at issue)
Westinghouse Electric Company LLC
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.