Granted Patent
Utility
US 6,226,869 · App. 09/202,767
Electric shaver
Inventors:
Hans-Eberhard Heintke, Peter Hilfinger, Klaus Oprach, Roland Ullmann, Matthias Wetzel
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Dec 21, 1998
Inventors
Hans-Eberhard Heintke
Peter Hilfinger
Klaus Oprach
Roland Ullmann
Matthias Wetzel
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.