ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,740,518, issued on Sept. 22.
"Liquid additive controller system and method for horticultural watering systems" was invented by Jon S Lips (Erie, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid additive control system for use in a horticultural irrigation system such as a residential or commercial sprinkler system. The liquid additive is injected directly into the irrigation system. The system is capable of being introduced into an existing and/or newly installed irrigation system. Two or more different types of liquid additive can be connected to the same irrigation system, such as to provide shrub and bush liquid additive (e.g. a phospho...