Array
(
[id] => 3657231
[patent_doc_number] => 05597245
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1997-01-28
[patent_title] => 'Cavitation suppressing ducted propeller system'
[patent_app_type] => 1
[patent_app_number] => 4/217257
[patent_app_country] => US
[patent_app_date] => 1962-08-13
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 3
[patent_figures_cnt] => 6
[patent_no_of_words] => 1443
[patent_no_of_claims] => 2
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 139
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/05/597/05597245.pdf
[firstpage_image] =>[orig_patent_app_number] => 217257
[rel_patent_id] =>[rel_patent_doc_number] =>) 04/217257 | Cavitation suppressing ducted propeller system | Aug 12, 1962 | Issued |