Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4654675 | Paper feeding device for automatic drafting machine | Osamu Kajikawa | 1987-03-31 |
| 4646109 | Automatic drafting machine having air blower means for holding paper down | Shuso Matsumoto, Kazunori Tada | 1987-02-24 |