Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784037 | Locking apparatus for gate valves | Carl W. Williams | 1988-11-15 |
| 4698197 | Magnetic shielding | John A. Kerns, Roger R. Stone | 1987-10-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784037 | Locking apparatus for gate valves | Carl W. Williams | 1988-11-15 |
| 4698197 | Magnetic shielding | John A. Kerns, Roger R. Stone | 1987-10-06 |