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The ornamental design for a combined gas and carbon monoxide sensor alarm, as shown and described. |
FIG. 1 is an exploded perspective view of the combined gas and carbon monoxide sensor alarm showing our new design, the cross-line shading which represents a contrasting surface is partially shown for ease of illustration and is understood to cover the entire surface areas indicated;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a side elevational view thereof;
FIG. 5 is a side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Browning, Harry F., Browning, Debra K.
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