Array
(
[id] => 2378870
[patent_doc_number] => 04707056
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1987-11-17
[patent_title] => 'Optical arrangement having a concave mirror or concave grating'
[patent_app_type] => 1
[patent_app_number] => 6/808291
[patent_app_country] => US
[patent_app_date] => 1985-12-12
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 4
[patent_figures_cnt] => 8
[patent_no_of_words] => 4011
[patent_no_of_claims] => 13
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 61
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/707/04707056.pdf
[firstpage_image] =>[orig_patent_app_number] => 808291
[rel_patent_id] =>[rel_patent_doc_number] =>) 06/808291 | Optical arrangement having a concave mirror or concave grating | Dec 11, 1985 | Issued |