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The ornamental design for a structural panel core, as shown and described.
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The broken lines around the perimeters of the drawings depict portions of the structural panel core that form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 06 2017 | The Pro Design Group, Inc. | (assignment on the face of the patent) | / | |||
| Dec 19 2017 | RAAB, CHRISTOPHER A | THE PRO DESIGN GROUP, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 044449 | /0186 |
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