Plank unit
The plank unit is shown with a symbolic break in its length and width. The appearance of any portion of the article between the break lines forms no part of the claimed design.
Claims
The ornamental design for a plank unit, as shown and described.
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Type: Grant
Filed: Oct 9, 2017
Date of Patent: Feb 25, 2020
Inventors: Chia-Ming Chang (Longtan Township), Chi-Hui Chang (Longtan Township), Pei-Chia Hsu (Longtan Township)
Primary Examiner: Kevin K Rudzinski
Assistant Examiner: Kimberly Barnes
Application Number: 29/621,525