Block formed from mirrored pair of sheet-formed tetrahedral units
Claims
The ornamental design for an block formed from mirrored pair of sheet-formed tetrahedral units, as shown and described.
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Type: Grant
Filed: Mar 16, 2018
Date of Patent: Dec 28, 2021
Inventor: T. Dashon Howard (Chicago, IL)
Primary Examiner: Catherine A Tuttle
Application Number: 29/640,688