820. Rotary slide valve vacuum pump: Balzers Vakuum GmbH, German patent 1,257,349, Patent abstr, 8 (5) part b, 7th Feb 1968, 2.

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 167 KB
• Volume: 18
• Category: Article
• ISSN: 0042-207X
• DOI: 10.1016/0042-207x(68)92157-x