Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847118 | Manufacturing method for a long patterned sheet provided with relief patterns | Yasuhiro Oshima, Katsuji Kakinuma, Ryozi Takahashi | 1989-07-11 |
| 4802209 | Paging system for electronic telephone apparatus | — | 1989-01-31 |