Granted Patent
Utility
US 4,877,185 · App. 06/948,123
Oscillating sprinkler
Inventor:
Fred W. Kufrin
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Dec 31, 1986
Inventor
Fred W. Kufrin
Assignee (at issue)
Western 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.