Author Topic: NCR Charge Phone Credit System  (Read 194 times)

Offline paul-f

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NCR Charge Phone Credit System
« on: March 04, 2017, 02:38:36 AM »
There has been some basic info on my site since 2009 -- mainly covering 1940s vintage equipment.

I recently added some historical info on ca. 1909 and 1920s vintage systems.  It's an interesting evolution.

http://www.paul-f.com/NCRcredit.html
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