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http://www.google.com.au/patents/USD652450?utm_source=gb-gplus-share
Patent USD652450 - Multiple button interactive electronic card
Multiple button interactive electronic card
Jeffrey D. Mullen et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: D652450
Filing date
: 9 Jul 2010
Issue date
: 17 Jan 2012
Application number
: 29/365,472
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