Granted Patent
Utility
US 4,579,285 · App. 06/601,944
Adjustable sprinkler system
Inventor:
Edwin J. Hunter
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Apr 19, 1984
Inventor
Edwin J. Hunter
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.