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The ornamental design for an intrusion alarm, as shown. |
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FIG. 1 is a pictorial view of the intrusion alarm embodying the novel design;
FIG. 2 is a front elevation view of the intrusion alarm of FIG. 1;
FIG. 3 is a side elevation view of the intrusion alarm of FIG. 1;
FIG. 4 is a top view of the intrusion alarm of FIG. 1; and
FIG. 5 is a rear elevation view of the intrusion alarm of FIG. 1.
Galvin, Aaron A., Keeler, Francis R.
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| Patent | Priority | Assignee | Title |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Feb 12 1976 | American District Telegraph Company | (assignment on the face of the patent) | / | |||
| May 13 1986 | American District Telegraph Company | ADT, INC | CHANGE OF NAME SEE DOCUMENT FOR DETAILS | 004822 | /0779 | |
| Feb 29 1988 | ADT, INC | ADT SECURITY SYSTEMS, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 004940 | /0758 |
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