Granted Patent
Utility
US 5,131,597 · App. 07/711,136
Irrigation system with flow regulation
Inventors:
Shannon Bard, Thomas N. Prassas
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: Jun 6, 1991
Inventors
Shannon Bard
Thomas N. Prassas
Assignee (at issue)
Aquapore Moisture Systems,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.