Control system

Details Control system Control system

2008-02-09

2010-10-12

Prince, Fred (Department: 1797)

Liquid purification or separation

With time control

C210S167110, C004S507000

Reexamination Certificate

active

07811448

ABSTRACT:
An apparatus and method for controlling a water characteristic of a body of water by controlling the cyclic release of a water characteristic material into the body of water with or without the system being responsive to a level of the water characteristic in the body of water.

REFERENCES:
patent: 4224154 (1980-09-01), Steininger
patent: 5019250 (1991-05-01), Lorenzen
patent: 6309538 (2001-10-01), Khan
patent: 2005/0137118 (2005-06-01), Silveri

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