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经营范围
发明名称
Porous pipe
摘要
申请公布号
US2130498(A)
申请公布日期
1938.09.20
申请号
US19370141518
申请日期
1937.05.08
申请人
KARL KLEMSCHOFSKI;LITTLE FERRY;PAUL VRANE
发明人
KLEMSCHOFSKI KARL;FERRY LITTLE;VRANE PAUL
分类号
E02B11/00
主分类号
E02B11/00
代理机构
代理人
主权项
地址
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