responsive to undesired emission of substances, e.g. pollution alarms

Full Title

Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for > Alarms for ensuring the safety of persons > responsive to undesired emission of substances, e.g. pollution alarms

Child Classifications

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• G08B 21/14 Toxic gas alarms (G08B21/16 takes precedence)
• G08B 21/16 Combustible gas alarms