Granted Patent
Utility
US 5,257,456 · App. 07/931,851
Shaving apparatus
Inventors:
Wolfgang Franke, Helmut Durr, Gebhard Braun, Reinhold Eichhorn
Patented Case
View Patent ↗
Granted: Nov 2, 1993
Filed: Aug 18, 1992
Inventors
Wolfgang Franke
Helmut Durr
Gebhard Braun
Reinhold Eichhorn
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.