ALEXANDRIA, Va., Sept. 24 -- United States Patent no. D1,148,321, issued on Sept. 22, was assigned to Birkenstock IP GmbH (Linz am Rhein, Germany).
"Shoe" was invented by W. Alexander Carleton (Linz am Rhein, Germany).
The patent was filed on Nov. 14, 2025, under Application No. D/033,013.
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