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JFE METAL PRODUCTS & ENGINEERING INC.
| JFE METAL PRODUCTS & ENGINEERING INC. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090155759 | PROJECTION BLACKBOARD, AND PRODUCING PROCESS THEREOF - Problem Provided are a projection blackboard having both of an excellent blackboard function and an excellent screen function, and a process for producing the same. | 06-18-2009 |