Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356840 | Digital fluid flow control system | Addison W. Langill, Jr. | 1982-11-02 |
| 4248263 | Digital fluid flow control apparatus | Addison W. Langill, Jr. | 1981-02-03 |
| 4244396 | Digital fluid flow control system | Addison W. Langill, Jr. | 1981-01-13 |