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发明名称
Drainpipe conveyer
摘要
申请公布号
US2333208(A)
申请公布日期
1943.11.02
申请号
US19420460441
申请日期
1942.10.01
申请人
SPEAR GEORGE T
发明人
SPEAR GEORGE T.
分类号
F16L1/036
主分类号
F16L1/036
代理机构
代理人
主权项
地址
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