Granted Patent
Utility
US 6,659,987 · App. 09/981,088
Fill spout for a drainage device
Inventors:
David Rork Swisher, Tony Lewis, Eugene Schrader, Michael D. Hudspeth
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Oct 16, 2001
Inventors
David Rork Swisher
Tony Lewis
Eugene Schrader
Michael D. Hudspeth
Assignee (at issue)
SHERWOOD SERVICES AG
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.