| 发明名称 |
Lap |
| 摘要 |
|
| 申请公布号 |
US2226506(A) |
申请公布日期 |
1940.12.24 |
| 申请号 |
US19400359420 |
申请日期 |
1940.10.02 |
| 申请人 |
NORTON COMPANY |
发明人 |
PYL EDWARD VAN DER |
| 分类号 |
B24B13/01;B24D18/00 |
主分类号 |
B24B13/01 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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