Granted Patent
Utility
US 4,316,481 · App. 06/138,581
Wall hydrant
Inventor:
Russell L. Fillman
Patented Case
View Patent ↗
Granted: Feb 23, 1982
Filed: Apr 11, 1980
Inventor
Russell L. Fillman
Assignee (at issue)
Woodford Manufacturing Company
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.