ALEXANDRIA, Va., Feb. 17 -- United States Patent no. D1,114,162, issued on Feb. 17, was assigned to Blue Skies Global LLC (Williams Bay, Wis.).
"Regenerative filter" was invented by Paul F. Nehlen III (Delavan, Wis.).
The patent was filed on April 10, 2025, under Application No. D/997,908.
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