ALEXANDRIA, Va., Aug. 20 -- United States Patent no. D1,089,097, issued on Aug. 19, was assigned to CATERPILLAR INC. (Peoria, Ill.).
"Spark plug" was invented by James Cress (West Lafayette, Ind.) and Steffen Kuhnert (Heidelberg, Germany).
The patent was filed on Dec. 7, 2023, under Application No. D/920,015.
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