Granted Patent
Utility
US 6,490,751 · App. 09/955,590
Vehicle vacuum system
Inventor:
William Ganzenmuller
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Sep 17, 2001
Inventor
William Ganzenmuller
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.