World patent information: Brown W. H. Trends in Patent Renewals at the United States Patent and Trademark Office. 17 (4), 225–234

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 94 KB
• Volume: 17
• Category: Article
• ISSN: 0172-2190
• DOI: 10.1016/0172-2190(96)81804-7