Pool monitoring

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S573600, C367S136000, C367S157000

Reexamination Certificate

active

07019649

ABSTRACT:
A pool monitoring system includes a hydrophone configured to generate an electrical signal in response to receiving a pressure wave in the liquid of a pool, and a processor configured to receive the electrical signal and generate a trigger signal, when the electrical signal includes a characteristic signature over a time period within a predetermined range of time periods.

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