ALEXANDRIA, Va., June 16 -- United States Patent no. D1,075,984, issued on May 20, was assigned to Putter Key LLC (Corte Madera, Calif.).
"Aiming key golf putter attachment" was invented by David S. Englefield (Cranleigh, Great Britain).
The patent was filed on April 8, 2024, under Application No. D/936,210.
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