Granted Patent
Utility
US 4,382,174 · App. 06/223,622
Infra-red hair dryer
Inventor:
Ileana D. Barns
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: Jan 9, 1981
Inventor
Ileana D. Barns
Assignee (at issue)
Clairol Incorporated
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.