ALEXANDRIA, Va., June 19 -- United States Patent no. D1,079,456, issued on June 17, was assigned to PrimeSource Building Products Inc. (Irving, Texas).
"Screw head" was invented by E. Erik Timothy (Apollo Beach, Fla.), Chih-Hsien Shen (Kaohsiung, Taiwan) and Tse-Kuang Jou (Kaohsiung, Taiwan).
The patent was filed on Dec. 16, 2022, under Application No. D/863,230.
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