Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6796139 | Method and apparatus for artificial ground freezing | Joe Sopko | 2004-09-28 |
| 4612780 | Apparatus for air treating articles carried on a spiral conveyor | Peter Y. M. Pao | 1986-09-23 |
| 4401449 | Slush ice maker | Walter H. Martin | 1983-08-30 |
| 4301659 | Fluidized freezing | Walter H. Martin, Peter Y. M. Pao | 1981-11-24 |
| 4281521 | Fluidized freezing | Walter H. Martin, Peter Y. M. Pao | 1981-08-04 |