Ching Chang

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Array ( [id] => 10176515 [patent_doc_number] => 09206712 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2015-12-08 [patent_title] => 'Variable valve timing device' [patent_app_type] => utility [patent_app_number] => 13/519370 [patent_app_country] => US [patent_app_date] => 2011-04-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 3921 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13519370 [rel_patent_id] =>[rel_patent_doc_number] =>)

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