Points of interest concerning the new IPC5: World Patent Information 11 (3), 115–120

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 139 KB
• Volume: 11
• Category: Article
• ISSN: 0172-2190
• DOI: 10.1016/0172-2190(89)90159-2