ALEXANDRIA, Va., Jan. 13 -- United States Patent no. D1,109,464, issued on Jan. 13, was assigned to Robert Thomas Metall- und Elektrowerke Gmbh & Co. KG (Neunkirchen, Germany).
"Vacuum cleaner" was invented by Michael Brandis (Nuremberg, Germany) and Tim Kellermann (Bremen, Germany).
The patent was filed on May 21, 2024, under Application No. D/521,140.
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