Granted Patent
Utility
US 6,494,216 · App. 09/787,061
Castanet type hair iron
Inventor:
Yoshihiro Hirata
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: May 29, 2001
Inventor
Yoshihiro Hirata
Assignee (at issue)
Phild Co., Ltd.
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.