Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758502 | Coupling ring for ventilation ducts, and method of connecting ventilation ducts | Lars-åke Mattsson, Kenneth Lennartsson, Sten Högman | 2004-07-06 |
| D475781 | Coupling ring for ventilation ducts | Lars-åke Mattsson, Kenneth Lennartsson, Sten Högman | 2003-06-10 |
| D461887 | Coupling ring for ventilation ducts | Lars-åke Mattsson, Kenneth Lennartsson, Sten Högman | 2002-08-20 |
| D456072 | Coupling ring for ventilation ducts | Lars-åke Mattsson, Kenneth Lennartsson, Sten Högman | 2002-04-23 |
| D456071 | Coupling ring for ventilation ducts | Lars-åke Mattsson, Kenneth Lennartsson, Sten Högman | 2002-04-23 |
| D454949 | Coupling ring for ventilation ducts | Lars-åke Mattsson, Kenneth Lennartsson, Sten Högman | 2002-03-26 |
| D453042 | Coupling ring for ventilation ducts | Lars-åke Mattsson, Kenneth Lennartsson, Sten Högman | 2002-01-22 |
| D386246 | Circular sleeve coupling | Kenneth Lennartsson | 1997-11-11 |
| D383195 | Circular sleeve coupling | Kenneth Lennartsson | 1997-09-02 |
| D383196 | Circular sleeve coupling | Kenneth Lennartsson | 1997-09-02 |
| 5618142 | Self-drilling blind rivet and method for making a pressure tight riveted joint by means of the same | Kenneth Lennartsson | 1997-04-08 |
| D367316 | Circular sleeve coupling | Kenneth Lennartsson | 1996-02-20 |
| 5473815 | Method for producing a connector for fluid pipe elements | Kenneth Lennartsson | 1995-12-12 |
| D362299 | Circular sleeve coupling | Kenneth Lennartsson | 1995-09-12 |
| D362300 | Circular sleeve coupling | Kenneth Lennartsson | 1995-09-12 |
| D361829 | Circular sleeve coupling | Kenneth Lennartsson | 1995-08-29 |
| D360021 | Circular sleeve coupling | Kenneth Lennartsson | 1995-07-04 |
| D360018 | Circular sleeve coupling | Kenneth Lennartsson | 1995-07-04 |
| D360019 | Circular sleeve coupling | Kenneth Lennartsson | 1995-07-04 |
| D360020 | Circular sleeve coupling | Kenneth Lennartsson | 1995-07-04 |
| 5405174 | Kit and method for producing a connector for fluid pipe elements | Kenneth Lennartsson | 1995-04-11 |