Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818731 | Colored frit and method for manufacturing of artificial stone | Toyonobu Mizutani, Masao Yoshizawa | 1989-04-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818731 | Colored frit and method for manufacturing of artificial stone | Toyonobu Mizutani, Masao Yoshizawa | 1989-04-04 |