Base for water purification filter

The ornamental design for a base for water purification filter, as shown and described.

FIG. 1 is a perspective view of a base for water purification filter, showing my design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left side elevation view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Jul 08 2020	XU, YANFENG	NINGBO EASTPURE ENVIRONMENTAL TECHNOLOGY CO , LTD	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	054424	0347	pdf
Nov 19 2020		Ningbo Eastpure Environmental Technology Co., Ltd.	(assignment on the face of the patent)

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