Granted Patent
Utility
US 6,619,832 · App. 09/936,798
Poker vibrator with frequency converter
Inventor:
Michael Steffen
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Sep 12, 2001
Inventor
Michael Steffen
Assignee (at issue)
Wacker Construction Equipment AG
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.