Sunday - October 4, 2026

Variable Refrigerant Flow System With Zone Grouping

2026-09-08

ALEXANDRIA, Virginia, Sept. 8 -- TYCO FIRE & SECURITY GMBH, Neuhausen am Rheinfall, Switzerland has been assigned a patent (No. US 12729870 B2, initially filed June 7, 2023) developed by five inventors John H. Burroughs, Wauwatosa, Wisconsin; Andrew J. Przybylski, Franksville, Wisconsin; Matthew J. Ellis, Milwaukee, Wisconsin; Mohammad N. Elbsat, Milwaukee, Wisconsin; and Michael J. Wenzel, Grafton, Wisconsin, for "Variable refrigerant flow system with zone grouping." . . .

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Variable Refrigerant Flow System With Zone Grouping

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