Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D286064 | Valve actuator control unit | John Hartshorne | 1986-10-07 |
| D285717 | Valve actuator control unit | John Hartshorne | 1986-09-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D286064 | Valve actuator control unit | John Hartshorne | 1986-10-07 |
| D285717 | Valve actuator control unit | John Hartshorne | 1986-09-16 |