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(
[id] => 8956975
[patent_doc_number] => 08502757
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2013-08-06
[patent_title] => 'Organic light emitting display having threshold voltage compensation mechanism and driving method thereof'
[patent_app_type] => utility
[patent_app_number] => 13/296238
[patent_app_country] => US
[patent_app_date] => 2011-11-15
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[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13296238
[rel_patent_id] =>[rel_patent_doc_number] =>) 13/296238 | Organic light emitting display having threshold voltage compensation mechanism and driving method thereof | Nov 14, 2011 | Issued |