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The ornamental design for a passive infrared intrusion detector unit, as shown. |
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FIG. 1 is a perspective view of a passive infrared intrusion detector unit showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a back elevational view thereof;
FIG. 4 is a side elevational view thereof; and
FIG. 5 is a front elevational view thereof.
Kahl, Jr., William G., Avery, Ronald G.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 05 1982 | KAHL, WILLIAM G JR | CERBERUS AG, A CORP OF SWITZERLAND | ASSIGNMENT OF ASSIGNORS INTEREST | 004036 | /0517 | |
| Aug 05 1982 | AVERY, RONALD G | CERBERUS AG, A CORP OF SWITZERLAND | ASSIGNMENT OF ASSIGNORS INTEREST | 004036 | /0517 | |
| Aug 16 1982 | Cerberus AG | (assignment on the face of the patent) | / |
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