Quick-change filter cartridge
United States Patent D321394

Petrucci, Raymond M. (Middlebury, CT)
Taylor, Bruce G. (Kensington, CT)
Giordano, Edward C. (Manchester, CT)
Padilla, James M. (Covina Heights, CA)
Palmer, Carl (La Habra Heights, CA)
Application Number:
Publication Date:
Filing Date:
Cuno, Incorporate (Meriden, CT)
Primary Class:
Field of Search:
D23/207-210, 210/136, 210/234, 210/238, 210/282, 210/440, 210/444, 210/446, 210/448, 210/457, 210/492
View Patent Images:
US Patent References:
D255045Filter casingMay, 1980KronsbeinD23/209
D251601Liquid propane line filterApril, 1979KuykendallD23/209
D251380FilterMarch, 1979CasamitjanaD23/209
D243767Water softenerMarch, 1977RutherfordD23/207
D221850N/ASeptember, 1971AndersonD23/209
D220263N/AMarch, 1971HughesD23/209
3237770Filter apparatusMarch, 1966Humbert, Jr.210/94
D188688N/AAugust, 1960SicardD23/209

Primary Examiner:
Lucas, Susan J.
Assistant Examiner:
Tung M. H.
Attorney, Agent or Firm:
Renner, Kenner, Greive, Bobak, Taylor & Weber
1. The ornamental design for a quick-change filter cartridge, as shown anddescribed.


FIG. 1 is a top, front, left side perspective view of a quick-change filter cartridge showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof, the rear being identical;

FIG. 4 is a left side elevational view thereof, the right side being identical;

FIG. 5 is a top, front, left side perspective view of a second embodiment thereof;

FIG. 6 is a rear elevational view thereof, the front being a mirror image;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a bottom plan view thereof; and

FIG. 9 is a right side elevational view thereof, the lower portion shown partially for ease of illustration.