| http://www.w3.org/ns/prov#value | - A small, card-shaped unit houses a microprocessor or logic circuitry, including means for inputting data, memory, means for generating tones,...http://www.google.com/patents/US5455857?utm_source=gb-gplus-sharePatent US5455857 - Automatic telephone calling cardAdvanced Patent SearchPublication numberUS5455857 APublication typeGrantApplication numberUS 08/033,334Publication dateOct 3, 1995Filing dat
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