发明授权
US07548684B2 Air treatment apparatus and refill pack 失效
空气处理设备和补充包装

Air treatment apparatus and refill pack
摘要:
Air treatment apparatus comprises an electric heating element (5) and a refill pack containing wax or paraffin granules (2) incorporating a fragrance or other active substance eg. insect repellent. In another embodiment heat is supplied by a exothermic reaction mixture.
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