Thread: 1920s Direct line telephone/intercom
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Old 11th Jun 2012, 1:42 pm   #5
boombox
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Join Date: Mar 2012
Location: Rotherham, South Yorkshire, UK.
Posts: 152
Default Re: 1920s Direct line telephone/intercom
Found some references:-

http://www.richardsradios.co.uk/hunnings.html

http://www.britishtelephones.com/gec/k040.htm
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