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The ornamental design for a ventilation unit, as shown and described. |
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FIG. 1 is a front and right side perspective view of a ventilation unit, showing my new design;
FIG. 2 is a right side elevation view thereof, the opposite side being a mirror image of that shown;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a top plan thereof; and,
FIG. 6 is a bottom plan view thereof.
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| Patent | Priority | Assignee | Title |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Dec 05 1989 | RUUSKANEN, MATTI | Teknovent Oy | ASSIGNMENT OF ASSIGNORS INTEREST | 005193 | /0481 | |
| Dec 13 1989 | Teknovent Oy | (assignment on the face of the patent) | / |
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