Granted Patent
Utility
US 6,167,909 · App. 09/407,731
Corrosion and contaminant resistant slide valve
Inventor:
Michael Davis
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Sep 28, 1999
Inventor
Michael Davis
Assignee (at issue)
Tactair Fluid Controls
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.