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United States Patent D807,474
Zou January 9, 2018

Filter unit


CLAIM The ornamental design for a filter unit, as shown and described.
Inventors: Zou; Zhibin (Qingdao, CN)
Name City State Country Type


Chai Wan


Assignee: Hong Kong Ecoaqua Co., Limited (Chai Wan, HK)
Appl. No.: D/605,231
Filed: May 24, 2017

Current U.S. Class: D23/209
Current International Class: 2301
Field of Search: ;D23/209,207 ;210/232,234,282,236

References Cited [Referenced By]

U.S. Patent Documents
6383382 May 2002 Johll, Jr.
D656579 March 2012 Sherman
D656580 March 2012 Sherman
D762813 August 2016 Lu
D774623 December 2016 Lu
D784492 April 2017 Lu
D788879 June 2017 Zou
D788880 June 2017 Zou
D792940 July 2017 Reckin
Primary Examiner: Webster; Robin V
Attorney, Agent or Firm: Muncy, Geissler, Olds & Lowe, P.C.


FIG. 1 is a Front elevational view of a filter unit showing my new design;

FIG. 2 is a Rear elevational view thereof;

FIG. 3 is a Left side view thereof;

FIG. 4 is a Right side view thereof;

FIG. 5 is a Top plan view thereof;

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

FIG. 7 is a Perspective view thereof.

The broken lines in the drawing depict portions of the filter unit that form no part of the claimed design.

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