ALEXANDRIA, Va., June 9 -- United States Patent no. D1,129,571, issued on June 9, was assigned to Wisteria GmbH (Inning, Germany).
"Puzzle box" was invented by Ingo Von Bargen (Inning, Germany) and Xi Zhang Von Bargen (Inning, Germany).
The patent was filed on Aug. 9, 2024, under Application No. D/956,914.
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