Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358034 | Sliding gate valve with orifice-encircling spring | — | 1982-11-09 |
| 4199085 | Sliding gate valve | Norman H. Watts, Philip Weatherall | 1980-04-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358034 | Sliding gate valve with orifice-encircling spring | — | 1982-11-09 |
| 4199085 | Sliding gate valve | Norman H. Watts, Philip Weatherall | 1980-04-22 |