Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878914 | Ceramic prosthesis for living body & method of making the same | Takeru Miwa | 1989-11-07 |
| 4877402 | Artificial tooth crown and method of producing the same | Masaya Hirabayashi | 1989-10-31 |