Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890234 | NC data modification method | Yasushi Onishi | 1989-12-26 |
| 4884211 | Numerical control unit file protection system | Hajimu Kishi, Masashi Yukutomo, Teruyuki Matsumura | 1989-11-28 |
| 4835700 | Numerical control data creation method | Yasushi Onishi | 1989-05-30 |
| 4823275 | Area cutting method | Yasushi Onishi | 1989-04-18 |
| 4823255 | Method of creating program for drilling holes | Yasushi Onishi | 1989-04-18 |
| 4823273 | Area cutting method | Yasushi Onishi | 1989-04-18 |
| 4799143 | NC data creation method | Takashi Takegahara, Yasushi Onishi | 1989-01-17 |