Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4368088 | Method of manufacturing corrugated tube | Hiroshi Asakura, Masaharu Kusaka, Akio Machihara | 1983-01-11 |
| 4292113 | Method and apparatus for manufacturing corrugated tubes | — | 1981-09-29 |