Array
(
[id] => 1898490
[patent_doc_number] => 04293423
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1981-10-06
[patent_title] => 'Process and apparatus for ion exchange by use of thermally regenerable resin'
[patent_app_type] => 1
[patent_app_number] => 5/843197
[patent_app_country] => US
[patent_app_date] => 1977-10-18
[patent_effective_date] => 0000-00-00
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[patent_no_of_words] => 4140
[patent_no_of_claims] => 16
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/293/04293423.pdf
[firstpage_image] =>[orig_patent_app_number] => 843197
[rel_patent_id] =>[rel_patent_doc_number] =>) 05/843197 | Process and apparatus for ion exchange by use of thermally regenerable resin | Oct 17, 1977 | Issued |