Granted Patent
Utility
US 6,062,262 · App. 09/114,710
Water drain pipe test plug device
Inventor:
George Tash
Patented Case
View Patent ↗
Granted: May 16, 2000
Filed: Jul 13, 1998
Inventor
George Tash
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.