Array
(
[id] => 2138483
[patent_doc_number] => 04505343
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1985-03-19
[patent_title] => 'Plural-part earth bit, and an improved bit head therefor'
[patent_app_type] => 1
[patent_app_number] => 6/523965
[patent_app_country] => US
[patent_app_date] => 1983-08-17
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 2
[patent_figures_cnt] => 6
[patent_no_of_words] => 3034
[patent_no_of_claims] => 16
[patent_no_of_ind_claims] => 9
[patent_words_short_claim] => 111
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/505/04505343.pdf
[firstpage_image] =>[orig_patent_app_number] => 523965
[rel_patent_id] =>[rel_patent_doc_number] =>) 06/523965 | Plural-part earth bit, and an improved bit head therefor | Aug 16, 1983 | Issued |