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| Number | Title | Issue Date |
| 7152557 | Apparatus for adjusting an operational point of an engine An exhaust valve assembly may include a diaphragm connected to a restricting member. The diaphragm may be configured to change a position of the restricting member based on a pressure on a first side of the diaphragm. A spring may abut a second side of the diaphragm... | 12/26/2006 |
