カーボンマイクロフォン (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "カーボンマイクロフォン" in Japanese language version.

refsWebsite
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alibaba.com

angloconcertina.org

books.google.com

britannica.com

ieeeghn.org

  • IEEE Global History Network: Carbon Transmitter. New Brunswick, NJ: IEEE History Center Archived copy”. 2010年3月18日時点のオリジナルよりアーカイブ。2009年1月14日閲覧。

invent.org

microphone-data.com

patents.google.com

shure.com

web.archive.org