Granted Patent
Utility
US 5,189,751 · App. 07/672,844
Vibrating toothbrush using a magnetic driver
Inventors:
David Giuliani, Roy W. Martin, Rodger H. Rosenbaum
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Mar 21, 1991
Inventors
David Giuliani
Roy W. Martin
Rodger H. Rosenbaum
Assignee (at issue)
Gemtech
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.