Granted Patent
Utility
US 5,669,138 · App. 08/525,536
Shaving head for electric razors
Inventor:
Matthias Wetzel
Patented Case
View Patent ↗
Granted: Sep 23, 1997
Filed: Sep 15, 1995
Inventor
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.