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发明名称
Manhålslock och -ram
摘要
申请公布号
FI17780(A)
申请公布日期
1937.10.16
申请号
FID17780
申请日期
1935.11.05
申请人
发明人
ELKINGTON VIVIAN
分类号
E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
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地址
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