Ventilation fan
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The gray shading represents illumination.
The broken lines shown in the drawings illustrate portions of the article and form no part of the claimed design.
Claims
The ornamental design for a ventilation fan as shown and described.
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Type: Grant
Filed: Sep 7, 2021
Date of Patent: Mar 25, 2025
Assignee: Delta Electronics, Inc. (Taoyuan)
Inventors: Ko-Neng Huang (Taoyuan), Yu-Hsiang Huang (Taoyuan), Yen-Lin Chen (Taoyuan)
Primary Examiner: Justin C Dodson
Assistant Examiner: Matthew Bird
Application Number: 29/806,876