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发明名称
Snowplow
摘要
申请公布号
US1826804(A)
申请公布日期
1931.10.13
申请号
US19300491361
申请日期
1930.10.27
申请人
MACDONALD DONALD A
发明人
MACDONALD DONALD A.
分类号
E01H5/09
主分类号
E01H5/09
代理机构
代理人
主权项
地址
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