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The ornamental design for a bubble machine, as shown and described.
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The dashed lines are included for the purpose of defining the boundaries of the unclaimed areas of the bubble machine and depicting unclaimed features contained within these boundaries.
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Apr 30 2019 | SHENZHEN QIANHAI JUNLIAN NETWORK TECHNOLOGY CO. LTD. | (assignment on the face of the patent) | / | |||
Apr 30 2019 | LI, YAN | SHENZHEN QIANHAI JUNLIAN NETWORK TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 049028 | /0709 | |
Apr 30 2019 | YUAN, WEIJIAN | SHENZHEN QIANHAI JUNLIAN NETWORK TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 049028 | /0709 |
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