The broken lines shown in the drawings illustrate portions of a hairdryer filter that form no part of the claimed design.
We claim the ornamental design for a hairdryer filter, as shown and described.
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Filed: Sep 7, 2017
Date of Patent: May 14, 2019
Assignee: Dyson Technology Limited (Malmesbury, Wiltshire)
Inventors: Weiyi Chia (Singapore), Eric Purnama Utama Ng (Singapore), Yuankang Liu (Singapore)
Primary Examiner: Barbara Fox
Assistant Examiner: Messina L Smith
Application Number: 29/616,671