Granted Patent
Utility
US 5,214,819 · App. 07/761,958
Toothbrush with a brush head moved by an electromotive drive means
Inventor:
Horst Kirchner
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Oct 4, 1991
Inventor
Horst Kirchner
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.