Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4660054 | Pen changer with orthogonal pick up from the turret | Osamu Kajikawa | 1987-04-21 |
| 4646109 | Automatic drafting machine having air blower means for holding paper down | Akio Toyama, Kazunori Tada | 1987-02-24 |