Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4317967 | Fault isolation device | Steven Gewitz, Roald G. Heyman | 1982-03-02 |
| 4314494 | Electric keyboard musical instrument | — | 1982-02-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4317967 | Fault isolation device | Steven Gewitz, Roald G. Heyman | 1982-03-02 |
| 4314494 | Electric keyboard musical instrument | — | 1982-02-09 |