发明名称 |
Pattern composition |
摘要 |
|
申请公布号 |
US2525984(A) |
申请公布日期 |
1950.10.17 |
申请号 |
US19460663609 |
申请日期 |
1946.04.19 |
申请人 |
CLARK WESTON CHARLES |
发明人 |
WESTON CHARLES CLARK |
分类号 |
B22C7/02 |
主分类号 |
B22C7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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