Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4530640 | Method and apparatus for wastegating turbocharged engine with divided exhaust system | — | 1985-07-23 |
| 4504187 | Turbocharger method of operation and turbine housing therefor | Jon A. Meyer, Andrew E. Johnston, John Fort | 1985-03-12 |
| 4474484 | Semi-floating bearing | Andrew E. Johnston | 1984-10-02 |
| D259507 | Tubocharger by-pass valve | Robert A. Keller | 1981-06-09 |