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I claim the ornamental design for the portion of a dump block, as shown and described.
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The broken lines shown herein are for illustrative purposes only and form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| May 11 2009 | Columbia Steel Casting Co., Inc. | (assignment on the face of the patent) | / | |||
| May 13 2009 | DOAN, STEPHEN P | COLUMBIA STEEL CASTING CO , INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 022686 | /0694 | |
| Dec 23 2022 | COLUMBIA STEEL CASTING CO , INC | COLUMBIA STEEL CAST PRODUCTS LLC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 062212 | /0862 | |
| Nov 08 2023 | COLUMBIA STEEL CAST PRODUCTS LLC | COLUMBIA IP HOLDCO, LLC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 065777 | /0062 |
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