Granted Patent
Utility
US 6,176,440 · App. 09/339,658
Wobbling sprinkler head
Inventor:
Frederick T. Elliott
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Jun 24, 1999
Inventor
Frederick T. Elliott
Assignee (at issue)
Senninger Irrigation, 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.