ALEXANDRIA, Va., March 5 -- United States Patent no. D1,064,696, issued on March 4, was assigned to Spuhl GmbH (Wittenbach, Switzerland).
"Coil spring" was invented by Romano Cavallo (St. Gallen, Switzerland) and Philipp Troxler (St. Gallen, Switzerland).
The patent was filed on Sept. 7, 2022, under Application No. D/866,288.
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