Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844755 | High-strength heat-resisting ferritic steel pipe and tube | Yasuo Otoguro, Toshio Fujita | 1989-07-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844755 | High-strength heat-resisting ferritic steel pipe and tube | Yasuo Otoguro, Toshio Fujita | 1989-07-04 |