Granted Patent
Utility
US 6,347,640 · App. 09/486,736
Multifunctional valve for a vehicle tank
Inventor:
Knut Meyer
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Jun 7, 2000
Inventor
Knut Meyer
Assignee (at issue)
Mannesmann VDO 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.