Water filter

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Description

FIG. 1 is a front elevational view of a water filter showing our new design;

FIG. 2 is a left side elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof.

The handle is broken away in FIGS. 1-4 for convenience of illustration.

Referenced Cited
U.S. Patent Documents
D172670 July 1954 Kolodny
D228065 August 1973 Comroe
D314418 February 5, 1991 Friesen
2987187 June 1961 Comroe
3368683 February 1968 Rak
4287057 September 1, 1981 Stanley
Other references
  • Photocopy of picture from sales literature entitled "Model PS Pocket Filter" from Katadyn U.S.A., Inc., Scottsdale, Ariz., Jun. 1989. Photocopy of picture from sales literature entitled "First Need Portable Water Purification Device" from General Ecology, Inc., of Lionville, Pa., Jun. 1989. Photocopy of picture in article in CanoeSport Journal, Timberline Filter Co., of Boulder, Colo., Fall 1988. Photocopy of picture from sales literature entitled "Pocket Purifier Straw," of Calko, Ltd., Jun. 1989. Photocopy of picture from sales literature entitled "Instant Reusable Water Filtration Device," Calco, Ltd., of Rosemont, Ill., Jun. 1989. Photocopy of picture from sales literature entitled "Outback," of Hiker Supply Co. of Bremerton, Wash., Jun. 1989.
Patent History
Patent number: D321550
Type: Grant
Filed: Jul 12, 1990
Date of Patent: Nov 12, 1991
Assignee: Mountain Safety Research, Inc. (Seattle, WA)
Inventors: Kenneth D. Laughlen (Seattle, WA), Daniel J. Vorhis (Seattle, WA), Nancy L. Dienes (Seattle, WA), James F. Fife (Seattle, WA)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Law Firm: Seed and Berry
Application Number: 7/549,710
Classifications
Current U.S. Class: Filter Or Strainer (2) (D23/209)