| 发明名称 |
Valve |
| 摘要 |
|
| 申请公布号 |
US1996398(A) |
申请公布日期 |
1935.04.02 |
| 申请号 |
US19330670183 |
申请日期 |
1933.05.09 |
| 申请人 |
RICHARD BARZYK |
发明人 |
BARZYK RICHARD |
| 分类号 |
E03F5/042 |
主分类号 |
E03F5/042 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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