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The ornamental design for a heat detector, as shown and described. |
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FIG. 1 is an elevational view of a heat detector showing my new design:
FIG. 2 is an elevational view thereof, 90° removed from FIG. 1;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a top plan view thereof; and
FIG. 5 is a fragmentary view in partial section taken along line 5--5 of FIG. 1.
The conventional wire grill, partially shown in FIGS. 1, 2 and 5, is understood to cover the entire areas indicated.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 30 1987 | FENNE, KENNETH R | PITTWAY CORPORATION, A CORP OF PA | ASSIGNMENT OF ASSIGNORS INTEREST | 004778 | /0798 | |
| Aug 10 1987 | Pittway Corporation | (assignment on the face of the patent) | / |
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