| 8955641 |
Passive valve and resonator assembly for vehicle exhaust system |
Kwin Abram, Kamilla Iskenderova, James Egan, Dennis Shaw |
2015-02-17 |
| 8453672 |
Passive valve for attenuation of low frequency noise |
Kwin Abram, Joseph Callahan, Robin Willats |
2013-06-04 |
| 8365522 |
Dual exhaust system with independent valve control |
Kwin Abram, Joseph Callahan, James Egan, Robin Willats |
2013-02-05 |
| 7650965 |
Exhaust system |
Aaron M. Thayer, Benjamin E. Jackson |
2010-01-26 |
| 7628250 |
Passive valve assembly for vehicle exhaust system |
Kwin Abram, Joseph Callahan |
2009-12-08 |
| 7584938 |
Side loaded valve assembly |
Joseph Callahan, Kwin Abram, Robin Willats |
2009-09-08 |
| 7575096 |
Pressed assembly for passive valve installation |
Robin Willats, Joseph Callahan, Anthony Morales |
2009-08-18 |
| 7155333 |
Method and apparatus for controlling sound of an engine by sound frequency analysis |
Kwin Abram, Joe Callahan, Robin Willats |
2006-12-26 |