Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884211 | Numerical control unit file protection system | Hajimu Kishi, Kunio Tanaka, Teruyuki Matsumura | 1989-11-28 |
| 4841432 | Method of reconfiguration of storage areas in an apparatus for cheating NC tapes | Hajimu Kishi, Takashi Takegahara | 1989-06-20 |