Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D259043 | Security telephone | Martin Feinberg, Ting-Wah Wong | 1981-04-28 |
| D256917 | Combination telephone instrument | Clifford W. Shackelton | 1980-09-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D259043 | Security telephone | Martin Feinberg, Ting-Wah Wong | 1981-04-28 |
| D256917 | Combination telephone instrument | Clifford W. Shackelton | 1980-09-16 |