Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613545 | Inert gas injecting plate brick or insert nozzle brick for use in a sliding gate valve apparatus of molten metal | Takashi Otsuka, Kenji Yamamoto, Mototsugu Osada, Tadao Taniguchi | 1997-03-25 |