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Publication numberUSD216258 S
Publication typeGrant
Publication dateDec 9, 1969
Filing dateMar 6, 1969
Publication numberUS D216258 S, US D216258S, US-S-D216258, USD216258 S, USD216258S
InventorsRobert E. Connolly
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Color comparator for testing the ph of aquarium water and the like
US D216258 S
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Des. 216,258 Patented Dec. 9, 1969 United States Patent Ofifice COLOR COMPARATOR FOR TESTING THE pH OF AQUARIUM WATER AND THE LIKE Robert E. Connolly, Parsi ppany, N.J., assignor to Sternco Industries, Inc., Harrison, N.J., a corporation of New ersey Filed Mar. 6, 1969, Ser. No. 16,085

Term of patent 14 years Int. Cl. D10]1 US. Cl. D16-2 FIG. I

FIG. 4

References Cited In the drawings,

6 5 3 s T n N m u A." Pl mkk Awm TIT PF D Ewfi Hww mew.

FIGURE 1 is a perspective view of a color comparator for testing the pH of aquarium water and the like showing my new design. D 135,543 3,176,577

FIGURE 2 is a front view thereof. FIGURE 3 is a top view thereof.

FOREIGN PATENTS 11/1953 Great Britain.

FIGURE 4 is a side view thereof. FIGURE 5 is a bottom view thereof. FIGURE 6 is a rear view thereof. Both side views are identical.

OTHER REFERENCES Scientific Glass Company, Cat. 66, 1966, p. 1089, item No. W-3229-5, Swimming Pool pH and Chlorine Content Tester.

The vertical shading on the transparent windows represent colored glass.

The broken line indicia illustrated in FIGS. 1 and 2 are shown for illustrative purposes only.

BERNARD ANSHER, Primary Examiner I claim:

The ornamental design for a color comparator for testing the pH of aquarium water and the like, as shown and described.

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US20050265895 *May 12, 2005Dec 1, 2005Kopelman Roni AReusable pH sensor device and related methods
WO2005116631A2 *May 13, 2005Dec 8, 2005Roni Aron KopelmanREUSABLE pH SENSOR DEVICE AND RELATED METHODS