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The ornamental design for a plant cultivation device, as shown and described.
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The broken lines shown in the drawings represent unclaimed environment only and form no part of the claimed design.
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Aug 03 2015 | KUGE, HIDENORI | OLYMPIA LIGHTING FIXTURES INDUSTRIES, LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 036290 | /0665 | |
Aug 10 2015 | OLYMPIA LIGHTING FIXTURES INDUSTRIES, LTD. | (assignment on the face of the patent) | / |
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