Granted Patent
Utility
US 4,974,613 · App. 07/350,358
Hair curler
Inventor:
Elizabeth Ho
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: May 10, 1989
Inventor
Elizabeth Ho
Assignee (at issue)
Windmere 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.