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The ornamental design for an electronic siren, as shown and described. |
FIG. 1 is a perspective view of an electronic siren showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 20 1994 | Midwest Dental Products Corporation | Dentsply Research & Development Corp | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007152 | /0151 | |
May 13 1998 | HU, HSIN-KAI | Alertek Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 009246 | /0274 | |
Jun 09 1998 | Alertek Corporation | (assignment on the face of the patent) | / |
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