Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321604 | Electro-optical float position indicator | George R. Jackson, Donald C. Frick | 2001-11-27 |
| D344031 | Flowmeter | Donald C. Frick | 1994-02-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321604 | Electro-optical float position indicator | George R. Jackson, Donald C. Frick | 2001-11-27 |
| D344031 | Flowmeter | Donald C. Frick | 1994-02-08 |