Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4682758 | Disk/stem connection apparatus for butterfly valve | William B. Scobie | 1987-07-28 |
| 4651763 | Fire-safe ventilation valve | William B. Scobie | 1987-03-24 |
| 4649949 | Fireproof valve assembly and seal element for use therein | William B. Scobie | 1987-03-17 |
| 4648418 | Fireproof valve assembly and valve element for use therein | William B. Scobie | 1987-03-10 |