檢索專利資料庫:TW、CN、US、JP
檢索式:(空氣 and (淨化 or 清淨 or 清潔 or 處理)) or (空气 and (净化 or 清净 or 清洁 or 处理)) or (air and (purifier or cleaner or treatment)) or (空気 and (清浄 or 浄化 or 処理))
檢索專利資料庫:TW、CN、US、JP
檢索式:(空氣 and (淨化 or 清淨 or 清潔 or 處理)) or (空气 and (净化 or 清净 or 清洁 or 处理)) or (air and (purifier or cleaner or treatment)) or (空気 and (清浄 or 浄化 or 処理))