发明名称 |
Rayproof building block |
摘要 |
|
申请公布号 |
US1780107(A) |
申请公布日期 |
1930.10.28 |
申请号 |
US19290348507 |
申请日期 |
1929.03.20 |
申请人 |
BARRY DAVID H |
发明人 |
BARRY DAVID H. |
分类号 |
E04B1/92 |
主分类号 |
E04B1/92 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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