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[patent_doc_number] => 20160017611
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[patent_title] => 'STAIR AND RAMP MOBILITY APPARATUS HAVING SECURE TRANSITION METHOD'
[patent_app_type] => utility
[patent_app_number] => 14/814538
[patent_app_country] => US
[patent_app_date] => 2015-07-31
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[rel_patent_id] =>[rel_patent_doc_number] =>) 14/814538 | STAIR AND RAMP MOBILITY APPARATUS HAVING SECURE TRANSITION METHOD | Jul 30, 2015 | Abandoned |