Warming devices generating the heat by exothermic reactions, e.g. heat released by the contact of unslaked lime with water

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Parts, details or accessories of cooking-vessels (A47J27/00 - A47J33/00 take precedence insofar as these parts, details or accessories are restricted to a particular kind of cooking-vessel provided for in a single one of these groups) > Warming devices > Warming devices generating the heat by exothermic reactions, e.g. heat released by the contact of unslaked lime with water