Granted Patent
Utility
US 4,589,439 · App. 06/644,260
Fire apparatus valve
Inventor:
Robert W. Steingass
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Aug 27, 1984
Inventor
Robert W. Steingass
Assignee (at issue)
Task Force Tips 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.