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经营范围
发明名称
Cattle guard
摘要
申请公布号
US1915181(A)
申请公布日期
1933.06.20
申请号
US19320611196
申请日期
1932.05.13
申请人
BOULTINGHOUSE MACK L
发明人
BOULTINGHOUSE MACK L.
分类号
E06B11/02
主分类号
E06B11/02
代理机构
代理人
主权项
地址
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