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The ornamental design for a book lamp, as shown and described.
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The broken lines in the drawings depict portions of the book lamp that form no part of the claimed design.
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Oct 09 2019 | HU, ZAIHUI | SHENZHEN QIANHAI PATUOXUN NETWORK AND TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 050685 | /0601 | |
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