Granted Patent
Utility
US 4,766,913 · App. 06/444,147
Microprocessor controlled hair treatment appliance
Inventor:
Gustave J. Klein
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Nov 24, 1982
Inventor
Gustave J. Klein
Assignee (at issue)
Revlon
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.