发明名称 |
Ball bearing |
摘要 |
|
申请公布号 |
US1927466(A) |
申请公布日期 |
1933.09.19 |
申请号 |
US19310581726 |
申请日期 |
1931.12.17 |
申请人 |
MENTON DAVID B |
发明人 |
MENTON DAVID B. |
分类号 |
F16C33/60 |
主分类号 |
F16C33/60 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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