Granted Patent
Utility
US 6,315,424 · App. 09/490,321
Underwater safety lighting device for swimming pools
Inventor:
Joseph Hui
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Jan 24, 2000
Inventor
Joseph Hui
Assignee (at issue)
SMARTPOOL 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.