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发明名称
Snowplow
摘要
申请公布号
US1776878(A)
申请公布日期
1930.09.30
申请号
US19290358657
申请日期
1929.04.27
申请人
ALWIN GEORGE F
发明人
ALWIN GEORGE F.
分类号
E01H5/06
主分类号
E01H5/06
代理机构
代理人
主权项
地址
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