Granted Patent
Utility
US 4,202,360 · App. 05/897,809
Hair curling roller
Patented Case
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Granted: May 13, 1980
Filed: Apr 19, 1978
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.