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  2. BBC-Marconi Type A microphone - Wikipedia

    en.wikipedia.org/wiki/BBC-Marconi_Type_A_microphone

    There were initial concerns that the new design infringed the patent of the RCA microphone, but these were overcome. [6] The Type A was produced at a cost of £9 each (approximately £475 in 2009). [6] [7] The original Type A microphone was designed by engineer F. W. Alexander [8] under the guidance of H. L. Kirke's Research Department at the ...

  3. Brüel & Kjær - Wikipedia

    en.wikipedia.org/wiki/Brüel_&_Kjær

    Danish Pro Audio, now DPA Microphones (studio microphones) After the division of the company, a number of former employees left to form G.R.A.S. Sound and Vibration. AGIV included the Brüel & Kjær split companies within its Spectris Division, which comprised Brüel & Kjær, Hottinger Baldwin Messtechnik GmbH (HBM), and BTG Instruments GmbH.

  4. eBay - Wikipedia

    en.wikipedia.org/wiki/EBay

    eBay office in Toronto, Canada. eBay Inc. (/ ˈ iː b eɪ / EE-bay, often stylized as ebay or Ebay) is an American multinational e-commerce company based in San Jose, California, that allows users to buy or view items via retail sales through online marketplaces and websites in 190 markets worldwide.

  5. Category talk:1630 in Belarus - Wikipedia

    en.wikipedia.org/wiki/Category_talk:1630_in_Belarus

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate

  6. 1630 in science - Wikipedia

    en.wikipedia.org/wiki/1630_in_science

    The year 1630 in science and technology involved some significant events. Astronomy. Following his recently completed Rudolphine Tables, ...

  7. List of ship launches in the 1630s - Wikipedia

    en.wikipedia.org/wiki/List_of_ship_launches_in...

    1630 England: The Ark: Merchant ship 4 July 1631 Massachusetts Bay Colony: Robert Molton New Bedford: Blessing of the Bay: Barque: Second ship built in the United States. [1] [2] 1631 England: Bright Woolwich: Vanguard: Warship For Royal Navy [3] 1632 Dutch Republic: Jan Salomonszoon Rotterdam: Aemelia: Ship of the line: Largest Dutch ship of ...