Granted Patent
Utility
US 5,577,285 · App. 08/256,520
Electric toothbrush with rotary bristle supporting structure
Inventor:
Michael Drossler
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: Jul 15, 1994
Inventor
Michael Drossler
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.