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The ornamental design for a flask-supportable stirrer drive unit, as shown. |
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FIG. 1 is a perspective view of a flask-supportable stirrer drive unit showing my new design; and
FIG. 2 is a perspective view of the design shown in FIG. 1, taken from the lower end thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 17 1982 | STREET, LAWRENCE M | HY-PER-GRAPH LIMITED, A BRITISH COMPANY | ASSIGNMENT OF ASSIGNORS INTEREST | 004033 | /0052 | |
| Jul 09 1982 | Hy-Per-Graph Limited | (assignment on the face of the patent) | / |
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