Електретний мікрофон (Ukrainian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Електретний мікрофон" in Ukrainian language version.

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7,852nd place

bell-labs.com

freepatentsonline.com

  • Patent US3118979: Electrostatic transducer (PDF). www.freepatentsonline.com (англійською) . United States Patent Office. Процитовано 12 квітня 2016.

pandia.ru

web.archive.org