Axial fan with double impellers rotating in mutually opposite directions
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Note that the present ornamental design for which patent protection is sought is shown in solid lines, while the portions shown in dashed lines are environmental features forming no part of the present design.
Claims
The ornamental design for an axial fan with double impellers rotating in mutually opposite directions, as shown and described.
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Type: Grant
Filed: Oct 17, 2007
Date of Patent: Oct 13, 2009
Assignee: Sanyo Denki Co., Ltd. (Tokyo)
Inventors: Toshiya Nishizawa (Nagano), Yasuhiro Maruyama (Nagano), Hayato Murayama (Nagano)
Primary Examiner: Selina Sikder
Attorney: Rankin, Hill & Clark LLP
Application Number: 29/296,287