Granted Patent
Utility
US 6,619,128 · App. 10/222,437
Pressure gauge for toy water gun
Inventor:
Shuk-Tin Hui
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Aug 16, 2002
Inventor
Shuk-Tin Hui
Assignee (at issue)
Fondation Imagine
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.