APEX LEARNING
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United States Patent and Trademark Office
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42
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2013-11-12
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details
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APEX LEARNING
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United States Patent and Trademark Office
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41
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2013-01-08
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details
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LITERACY ADVANTAGE
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United States Patent and Trademark Office
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41
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2012-06-19
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details
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APEX
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United States Patent and Trademark Office
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41
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2011-10-25
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details
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CLASSTOOLS ACHIEVE
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United States Patent and Trademark Office
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41
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2007-02-27
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details
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United States Patent and Trademark Office
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16
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2004-07-06
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details
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CLASSTOOLS
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United States Patent and Trademark Office
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41
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2004-06-22
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details
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|
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United States Patent and Trademark Office
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9
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2004-06-08
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details
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APEX LEARNING
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|
United States Patent and Trademark Office
|
16
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2003-12-23
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details
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APEX LEARNING
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|
United States Patent and Trademark Office
|
41
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2003-12-09
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details
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United States Patent and Trademark Office
|
38
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2003-12-02
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details
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United States Patent and Trademark Office
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42
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2003-10-07
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details
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United States Patent and Trademark Office
|
41
|
2003-09-09
|
|
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details
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APEX LEARNING
|
|
United States Patent and Trademark Office
|
38
|
2003-06-10
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|
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details
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