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The ornamental design for a portable power source, as shown and described.
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The broken lines in the drawings are for the purpose of illustrating portions of the portable power source that form no part of the claimed design.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Aug 16 2017 | BAI, WEI | SHENZHEN HELLO TECH ENERGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 043354 | /0113 | |
Aug 16 2017 | YANG, TAO | SHENZHEN HELLO TECH ENERGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 043354 | /0113 | |
Aug 22 2017 | Shenzhen Hello Tech Energy Co., Ltd. | (assignment on the face of the patent) | / |
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