Donut humidifier
The broken lines shown in the drawings depict portions of the donut humidifier in which the design is embodied that form no part of the claimed design.
Claims
The ornamental design for a donut humidifier, as shown and described.
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Type: Grant
Filed: Apr 4, 2019
Date of Patent: Jul 30, 2019
Inventor: Xiangfu Li (Shenzhen)
Primary Examiner: David G Muller
Application Number: 29/686,406