Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846212 | Bleed valve assembly for double block and bleed system | William B. Scobie | 1989-07-11 |
| 4846225 | Transmission assembly for use with double block and bleed system | William B. Scobie | 1989-07-11 |