发明名称 |
Washboard road harrow |
摘要 |
|
申请公布号 |
US1861494(A) |
申请公布日期 |
1932.06.07 |
申请号 |
US19290384318 |
申请日期 |
1929.08.08 |
申请人 |
DEVEREUX ARTHUR M |
发明人 |
DEVEREUX ARTHUR M. |
分类号 |
E02F3/76 |
主分类号 |
E02F3/76 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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