Filter unit
United States Patent D856472

Zou, Zhibin (Qingdao, CN)
Application Number:
Publication Date:
Filing Date:
Qingdao Ecopure Filter Co., Ltd (Qingdao, CN)
Primary Class:
International Classes:
(IPC1-7): 2301
Field of Search:
D23/207, D23/209, D23/228
View Patent Images:
US Patent References:
D831786Filter unit2018-10-23ZouD23/209
D831788Filter unit2018-10-23ZouD23/209
D822155Filter unit2018-07-03ZouD23/209
D813357Filter key2018-03-20BryantD23/262
D794749Water filter2017-08-15ZouD23/209
D792943Filter unit2017-07-25ZouD23/209
D788880Filter unit2017-06-06ZouD23/209
D773608Manifold engagement portion of a filter cartridge2016-12-06NelsonD23/209
D770011Manifold engagement portion of a filter cartridge2016-10-25NelsonD23/209
D761934Filter cartridge2016-07-19BranscombD23/209
D750738Set of mounting lugs for a water filter2016-03-01BairdD23/209
D750739Set of mounting lugs for a water filter2016-03-01BairdD23/209
D599880Filter cartridge2009-09-08RampenD23/209
D472299Filter cartridge connector2003-03-25FritzeD23/209

Primary Examiner:
Rosati, Brandon M.
Attorney, Agent or Firm:
Muncy, Geissler, Olds & Lowe, P.C.

1. The ornamental design for a filter unit, as shown and described.


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 views thereof.

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