Granted Patent
Utility
US 6,712,290 · App. 10/196,425
Skin cleaner
Inventor:
Ghen-Jung Chien
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Jul 17, 2002
Inventor
Ghen-Jung Chien
Assignee (at issue)
Yen Sun Technology 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.