Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323257 | Piston ring with a Cr-C-Fe inlaid ring in its outer surface, and a method of making it | Katsumi Kondo, Yoshio Huwa | 1982-04-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323257 | Piston ring with a Cr-C-Fe inlaid ring in its outer surface, and a method of making it | Katsumi Kondo, Yoshio Huwa | 1982-04-06 |