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经营范围
发明名称
Dirt chute
摘要
申请公布号
US1898343(A)
申请公布日期
1933.02.21
申请号
US19300464172
申请日期
1930.06.27
申请人
AMERICAN SAFETY DEVICE CO.
发明人
DAVIDSON FREDERIC A.
分类号
B65G11/18;E04G7/24
主分类号
B65G11/18
代理机构
代理人
主权项
地址
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