ALEXANDRIA, Va., Aug. 5 -- United States Patent no. D1,139,221, issued on Aug. 4, was assigned to SONY GROUP Corp. (Tokyo).
"Headphone" was invented by Soichi Tanaka (Kanagawa, Japan).
The patent was filed on April 30, 2025, under Application No. D/001,910.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=D1139221&OS=D1139221&RS=D1139221
Disclaimer: Curated by HT Syndication....