Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4423675 | Magnetic circuit and print hammer | Chor S. Chan | 1984-01-03 |
| 4273039 | Impact printing apparatus and method using reluctance switching and a closed loop drive system | Todd M. Woodcock | 1981-06-16 |