Granted Patent
Utility
US 6,237,186 · App. 09/414,174
Built-in wet/dry vacuum system
Inventor:
Robert Griffiths
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Oct 7, 1999
Inventor
Robert Griffiths
Assignee (at issue)
Bridgewater LLC
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.