A DR. OARTEL, of Wilkinsburg, New York, told ‘the Pennsylvania Dental Society that germs in diseased teeth can be killed by placing the tooth hetween the sending and receiving plates of a simple shortwave set. A SPEAKING poster may be seen in Paris, on the Boulevarde and in the Champs-Hlysees ; it is operated by a photo-electric cell to whisper selling talk to passers-by. :
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Radio Record, Volume VIII, Issue 32, 15 February 1935, Page 37
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63Untitled Radio Record, Volume VIII, Issue 32, 15 February 1935, Page 37
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