Hollow stacking cube
The hollow stacking cube shown in broken lines in
The hollow stacking cube shown in broken lines in
Claims
The ornamental design for a hollow stacking cube, as shown and described.
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Type: Grant
Filed: Oct 6, 2016
Date of Patent: Mar 20, 2018
Inventor: David M. Morris (Foristell, MO)
Primary Examiner: Cynthia M Chin
Application Number: 29/580,164