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The ornamental design for a smoke detector, as shown and described. |
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FIG. 1 is a perspective view of the smoke detector embodying the design of the present invention;
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 top plan view thereof; and,
FIG. 6 is a bottom view thereof.
The criss-cross lining which is shown in FIGS. 1 and 5 represents a conventional wire grill.
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