Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684788 | Electric toaster oven control | William D. Ryckman, Jr. | 1987-08-04 |
| 4239322 | Polarity protector | — | 1980-12-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684788 | Electric toaster oven control | William D. Ryckman, Jr. | 1987-08-04 |
| 4239322 | Polarity protector | — | 1980-12-16 |