Coupling ring for ventilation ducts

USD475781S1 · kind S1 · design

Assignee

• LINDAB AB · SE

Inventors

• Lars-åke Mattsson · Ystad, SE
• Kenneth Lennartsson · Torekov, SE
• Sten Högman · Grevie, SE
• Carl-Gustaf Sonden · Ängelholm, SE

Key dates

• Filing date: Dec 13, 2001
• Grant date: Jun 10, 2003
• Expiry date: Jun 10, 2017

Classification

• Technology area (CPC —): General