Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856051 | Automatic telephone answering apparatus | Satoshi Ohgochi | 1989-08-08 |
| 4817133 | Party selecting circuit arrangement | Ryoichi Takahashi, Seiichi Ogawa | 1989-03-28 |
| 4802202 | Telephone call selector | Ryoichi Takahashi, Seiichi Ogawa | 1989-01-31 |