发明名称 |
Expansion joint |
摘要 |
|
申请公布号 |
US1948916(A) |
申请公布日期 |
1934.02.27 |
申请号 |
US19310534671 |
申请日期 |
1931.05.02 |
申请人 |
PETER BALLAS |
发明人 |
HENDERSON HURLEY NEWTON |
分类号 |
E01C11/02;E01C11/14 |
主分类号 |
E01C11/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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