Granted Patent
Utility
US 5,010,778 · App. 07/442,321
Vibrator
Inventor:
Franz Riedl
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Oct 26, 1989
Inventor
Franz Riedl
Assignee (at issue)
Wacker-Werke GmbH & Co. KG
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.