Granted Patent
Utility
US 5,123,597 · App. 07/674,535
Sprinkler nozzle with vent port
Inventor:
Albert R. Bendall
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Mar 21, 1991
Inventor
Albert R. Bendall
Assignee (at issue)
Hunter Industries, Inc.
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.