Granted Patent
Utility
US 6,394,697 · App. 09/230,215
Vibration plate with a sole
Inventor:
Nanne De Boer
Patented Case
View Patent ↗
Granted: May 28, 2002
Filed: Jul 18, 2000
Inventor
Nanne De Boer
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.