Patent
   D917661
Priority
Dec 29 2018
Filed
Mar 14 2019
Issued
Apr 27 2021
Expiry
Apr 27 2036
Assg.orig
Entity
unknown
15
15
n/a
The ornamental design for a filter, as shown and described.

FIG. 1 is a top right perspective view of a filter, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a side view thereof; and,

FIG. 7 is an opposite side view thereof.

Wei, Enyu

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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 14 2019Tianjin Tianchuang Best Pure Environmental Science and Technology Co., LTD(assignment on the face of the patent)
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