By using the umbrella with the fan, the fan components can be hidden when the umbrella is folded; and the direction of the fan components can be adjusted according to the user needs. 展开 收藏 引用 批量引用 报错 分享 全部来源 求助全文 Google Patents 相似文献 参考文献 引证文献...
By using the umbrella with the fan, the fan components can be hidden when the umbrella is folded; and the direction of the fan components can be adjusted according to the user needs.CN崔立春
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the present asymmetrical umbrella may be manufactured with a much lower component and labor cost than a traditional umbrella. Also, because the asymmetrical umbrella described herein contains very few moving parts, the reliability and robustness of the asymmetrical umbrella is also much improved from tr...