Granted Patent
Utility
US 6,830,107 · App. 10/427,470
Fluid flow switching device
Inventor:
Anthony Allen
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: May 1, 2003
Inventor
Anthony Allen
Assignee (at issue)
Ruff Pup Limited
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.