Saturday - December 20, 2025

Multi-Mic Earphone Design and Assembly

2025-09-23

ALEXANDRIA, Virginia, Sept. 23 -- ST R&DTECH LLC, Delray Beach, Florida has been assigned a patent (No. US 12425759 B2, initially filed Jan. 14, 2022) developed by John Keady, Fairfax Station, Virginia, for "Multi-mic earphone design and assembly." . . .

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Multi-Mic Earphone Design and Assembly

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