Array
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[id] => 6161124
[patent_doc_number] => 20110159471
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2011-06-30
[patent_title] => 'AUDIO/VIDEO TEACHING SYSTEM'
[patent_app_type] => utility
[patent_app_number] => 12/900757
[patent_app_country] => US
[patent_app_date] => 2010-10-08
[patent_effective_date] => 0000-00-00
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[pdf_file] => publications/A1/0159/20110159471.pdf
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[rel_patent_id] =>[rel_patent_doc_number] =>) 12/900757 | AUDIO/VIDEO TEACHING SYSTEM | Oct 7, 2010 | Abandoned |