Granted Patent
Utility
US 4,823,458 · App. 06/877,697
Foam bodied hair curler
Inventors:
Detlef Hollenberg, Hans Schneider, Georg Weihrauch
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Jun 20, 1986
Inventors
Detlef Hollenberg
Hans Schneider
Georg Weihrauch
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.