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Publication numberUSD234357 S
Publication typeGrant
Publication dateFeb 18, 1975
Filing dateJul 17, 1972
Publication numberUS D234357 S, US D234357S, US-S-D234357, USD234357 S, USD234357S
InventorsJohn Joseph Humphrey
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Filter for pressurized fluid
US D234357 S
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Description  (OCR text may contain errors)

United States Patent 234,357

Patented Feb. 18, 1975 FILTER FOR PRESSURIZED FLUID John Joseph Humphrey, Denver, Colo., assignor to C. A. Norgren Co., Littleton, Colo.

Filed July 17, 1972, Ser. No. 272,165

Term of patent 14 years Int. Cl. D23-01 U.S. Cl. D234 FIG. 1 is a perspective view of a filter for pressurized References Cited fiuid showing my new design;

FIG. 2 is a side elevational view thereof; UNITED STATES PATENTS FIG. 3 is an additional side elevational view th re f; 136,961 1/1944 Siemers D23 4 FIG. 4 is a top view thereof; and ,850 9/1971 Anderson D23 4 FIG. 5 is a bottom view thereof. 2,894,600 /1959 Veres.

I claim: ,2 7 8/1966 German 55-337 The ornamental design for a filter for pressurized fluid, 3,418,789 12/1968 Hoffman et a1 55219 as shown, 7, 4/1970 Veres et a1 55-219 OTHER REFERENCES Norgren Catalog NC-31a, recd Sept. 4, 1964, p. 3, Manual-Drain Filters.

JAMES R. LARGEN, Primary Examiner

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US7749394May 13, 2009Jul 6, 2010The Procter & Gamble CompanyMethods of treating water
US7850859May 13, 2009Dec 14, 2010The Procter & Gamble CompanyTreating low-pressure, untreated drinking water with a water treatment device comprising a storage housing and mesoporous activated carbon filter particles; pore size adequate toremove bacteria and viruses; potable drinking water forthird-world countries
US7922008 *Jul 10, 2009Apr 12, 2011The Procter & Gamble CompanyWater filter materials and water filters containing a mixture of microporous and mesoporous carbon particles
US8119012Mar 7, 2011Feb 21, 2012The Procter & Gamble CompanyWater filter materials and water filters containing a mixture of microporous and mesoporous carbon particles