Ceiling ventilation fan
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Description
The broken lines illustrate portions of the ceiling ventilation fan and form no part of the claimed design.
Claims
We claim the ornamental design for a ceiling ventilation fan, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D857873
Type: Grant
Filed: Mar 2, 2018
Date of Patent: Aug 27, 2019
Assignee: Panasonic Intellectual Property Management Co., Ltd. (Osaka)
Inventors: Yashio Shimada (Osaka), Nobuyuki Mase (Nara)
Primary Examiner: Cathron C Brooks
Assistant Examiner: Sharon S Oum
Application Number: 29/638,997
Type: Grant
Filed: Mar 2, 2018
Date of Patent: Aug 27, 2019
Assignee: Panasonic Intellectual Property Management Co., Ltd. (Osaka)
Inventors: Yashio Shimada (Osaka), Nobuyuki Mase (Nara)
Primary Examiner: Cathron C Brooks
Assistant Examiner: Sharon S Oum
Application Number: 29/638,997
Classifications