ALEXANDRIA, Va., July 15 -- United States Patent no. D1,131,743, issued on June 23, was assigned to MANN TEKNIK AB (Mariestad, Sweden).

"Fluid coupling" was invented by Marcus Backstrom (Mariestad, Sweden), Gerhard Kopplin (Lyrestad, Sweden) and Lars Lindell (Mariestad, Sweden).

The patent was filed on Dec. 22, 2021, under Application No. D/820,526.

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