Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886148 | Sliding exhaust brake having main valve and auxiliary valve with flow space therebetween | — | 1989-12-12 |
| 4858734 | Slide type exhaust brake system | — | 1989-08-22 |
| 4848523 | Sliding exhaust brake system | — | 1989-07-18 |
| 4819696 | Slide type exhaust brake system | Kazunori Takikawa | 1989-04-11 |