Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849869 | Switching regulator having a pulse width control system | Jiro Tanuma | 1989-07-18 |
| 4818129 | Method for correcting bidirectional printing alignment of a serial dot printer | Jiro Tanuma, Kuniharu Hayashi, Hiroshi Sakaino | 1989-04-04 |