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The ornamental design for a modular track assembly for a 300-unit biological sample changer, substantially as shown. |
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FIG. 1 is a top plan view of the inventive modular track assembly for a 300-unit biological sample changer; and
FIG. 2 is a side elevation of the modular track assembly illustrated in FIG. 1.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 12 1977 | Actus, Inc. | (assignment on the face of the patent) | / | |||
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