Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5243150 | Ribbon transducers | Graham Bank, Harold C. Pinfold, deceased | 1993-09-07 |
| 5148888 | Ribbon transducers | Graham Bank, Harold C. Pinfold, deceased | 1992-09-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5243150 | Ribbon transducers | Graham Bank, Harold C. Pinfold, deceased | 1993-09-07 |
| 5148888 | Ribbon transducers | Graham Bank, Harold C. Pinfold, deceased | 1992-09-22 |