“Can you hear me” “Instead hearing, now I can see…”
“Can you hear me” “Instead hearing, now I can see…” For 50
years of invention and development of electret microphone of Bell
Laboratories (1962-2012) Built-in pre-charged materials: from microphone
to battery and vice versa The intrinsic cell integration concept and
the material and system breakthrough after Alexander Graham Bell’s
telephone and Thomas Alva Edison’s carbon button microphone made deep
impacts on the industrial and business successes of modern portable
telecommunications, electronics and battery energy storage.
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