| 发明名称 |
Bimetallic coin blank and method for producing the same. |
| 摘要 |
<p>A bimetallic coin blank is made of two different parts: an inner part (2) circular in cross-section, and an annular part (1) compressed around it. A tight and solid juncture between the two parts of the blank is created by means of a continuous groove (3) formed in the inner part. <IMAGE></p> |
| 申请公布号 |
EP0529349(A1) |
申请公布日期 |
1993.03.03 |
| 申请号 |
EP19920113196 |
申请日期 |
1992.08.03 |
| 申请人 |
OUTOKUMPU PORICOPPER OY |
发明人 |
VAHTERISTO, ARI JUKKA ERIK |
| 分类号 |
B21K25/00;A44C21/00;B44B5/00 |
主分类号 |
B21K25/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
