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经营范围
发明名称
Improvements in gratings or covers for gulleys or manholes or the like
摘要
申请公布号
GB452912(A)
申请公布日期
1936.09.01
申请号
GB19360012307
申请日期
1936.04.30
申请人
WALTER JOSEPH WOODROW;WALTER JOHN WOODROW;JAMES WILLIAM WOODROW;ALEXANDER CHARLES WOODROW
发明人
分类号
E02D29/12;E02D29/14
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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