Granted Patent
Utility
US 5,253,664 · App. 07/913,176
Drain blaster
Inventor:
Timothy Wilson
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Jul 14, 1992
Inventor
Timothy Wilson
Assignee (at issue)
Jet Blast Products Corp.
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.