Granted Patent
Utility
US 4,851,641 · App. 07/063,253
Electrical curling iron having a pair of interchangeably usable curling sections of different size and/or configuration
Inventors:
Karlheinz Barowski, Dieter Liebenthal
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Jun 17, 1987
Inventors
Karlheinz Barowski
Dieter Liebenthal
Assignee (at issue)
The Braun 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.