Granted Patent
Utility
US 4,029,150 · App. 05/664,187
Sprinkler
Inventor:
Earl Goodsell
Patented Case
View Patent ↗
Granted: Jun 14, 1977
Filed: Mar 5, 1976
Inventor
Earl Goodsell
Assignee (at issue)
ATO BV
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.