发明名称 |
Tau-square and gauge |
摘要 |
|
申请公布号 |
US1849955(A) |
申请公布日期 |
1932.03.15 |
申请号 |
US19290401706 |
申请日期 |
1929.10.23 |
申请人 |
SALVESIN RO SIGVART |
发明人 |
RO SIGVART SALVESIN |
分类号 |
B43L7/02 |
主分类号 |
B43L7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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