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The ornamental design for a portable power supply, as shown and described.
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The broken lines shown in the figures depict portions of the portable power supply that form no part of the claimed design.
Yang, Tao, Bai, Wei, Sun, Zhongwei
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Jul 17 2020 | SUN, ZHONGWEI | SHENZHEN HELLO TECH ENERGY CO LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 053463 | /0132 | |
Jul 17 2020 | BAI, WEI | SHENZHEN HELLO TECH ENERGY CO LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 053463 | /0132 | |
Jul 17 2020 | YANG, TAO | SHENZHEN HELLO TECH ENERGY CO LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 053463 | /0132 | |
Aug 11 2020 | SHENZHEN HELLO TECH ENERGY CO LTD | (assignment on the face of the patent) | / |
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