Granted Patent
Utility
US 6,444,039 · App. 09/520,108
Three-dimensional showerhead apparatus
Inventor:
Tue Nguyen
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Mar 7, 2000
Inventor
Tue Nguyen
Assignee (at issue)
Simplus Systems Corporation
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.