Dual filter
United States Patent D708749

Appling, William M. (Granville, NY, US)
Barton, Matthew G. (Wilton, NY, US)
Application Number:
Publication Date:
Filing Date:
Delcath Systems, Inc. (New York, NY, US)
Primary Class:
International Classes:
(IPC1-7): 2401
Field of Search:
D24/162, D24/164, D24/169, D23/209, 210/198.2, 210/444-446, 210/455
View Patent Images:
US Patent References:
D656578Cassette filterMarch, 2012Sherman et al.D23/209
D656579Cassette filter and coverplateMarch, 2012Sherman et al.D23/209
D621001Premium filterAugust, 2010Maziel et al.D23/209
D438932Waste treatment plantMarch, 2001McKinneyD23/207
D384128Water filter housingSeptember, 1997ScottD23/209

Primary Examiner:
Nelson, Chase T.
Assistant Examiner:
Aman, Ania
Attorney, Agent or Firm:
Abrams, Franklin S.

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


FIG. 1 is a front perspective view of the dual filter;

FIG. 2 is a front view of the dual filter;

FIG. 3 is a rear view of the dual filter;

FIG. 4 is a side view of the dual filter;

FIG. 5 is a top view of the dual filter; and,

FIG. 6 is a bottom view of the dual filter.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. The right side view and the left side view of the dual filter are identical and FIG. 4 is a view of either the left or right side of the dual filter.