For forumites with an interest in technical subjects: Phototone

by Albert Haim

From the Wireless World and Radio Review Dec 12, 1928: "Talking Films, No. 1 - The British Phototone System."

http://bixography.com/BritishPhototoneWirelessWorld.pdf   pdf document; you need acrobat or acrobat reader

Albert



Posted on Apr 27, 2012, 6:29 AM

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