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The ornamental design for a self-priming transfer pump, as shown and described.
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The broken lines in the drawings illustrate portions of the self-priming transfer pump that form no part of the claimed design.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Nov 17 2018 | WANG, XIAN | GP ENTERPRISES CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 047713 | /0984 | |
Dec 03 2018 | GP Enterprises Co., Ltd | (assignment on the face of the patent) | / |
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