Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812370 | Surface coated tungsten carbide-base sintered hard alloy material for inserts of cutting tools | Jun Sugawara, Sumiyoshi Takizawa | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812370 | Surface coated tungsten carbide-base sintered hard alloy material for inserts of cutting tools | Jun Sugawara, Sumiyoshi Takizawa | 1989-03-14 |