Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834636 | Single-ended barrel engine with double-ended, double roller pistons | Bret Hauser, David P. Branyon | 2004-12-28 |
| 6698394 | Homogenous charge compression ignition and barrel engines | — | 2004-03-02 |