Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174908 | Non-reversible sliding gate, valve and method | Patrick D. King | 1992-12-29 |
| 5052598 | Sliding gate valve method and replaceable retractories | Patrick D. King | 1991-10-01 |
| 4582232 | Valve, clamp, refractory and method | George T. Shapland, Patrick D. King, Randall L. Stalter | 1986-04-15 |