Patent
   D857872
Priority
Mar 02 2018
Filed
Mar 02 2018
Issued
Aug 27 2019
Expiry
Aug 27 2034
Assg.orig
Entity
unknown
13
37
n/a
We claim the ornamental design for a ceiling ventilation fan, as shown and described.

FIG. 1 is a front perspective view of a ceiling ventilation fan of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a cross-sectional view thereof, taken along the line 8-8 in FIG. 2.

The broken lines illustrate portions of the ceiling ventilation fan and form no part of the claimed design.

Mase, Nobuyuki, Shimada, Yashio

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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 16 2018SHIMADA, YASHIOPANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0451500462 pdf
Feb 16 2018MASE, NOBUYUKIPANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0451500462 pdf
Mar 02 2018PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.(assignment on the face of the patent)
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