Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4696635 | Apparatus for forming unevenness on an outer surface of a synthetic resin-coated steel pipe | Toshihisa Tamura, Yuji Ikeda, Mutsuya Araikawa, Kazuyoshi Kywata | 1987-09-29 |