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发明名称
Appliance for depositing and/or picking up packages
摘要
申请公布号
US1830986(A)
申请公布日期
1931.11.10
申请号
US19290373038
申请日期
1929.06.22
申请人
ROBERT DRUMMOND
发明人
DRUMMOND ROBERT
分类号
B64D1/22
主分类号
B64D1/22
代理机构
代理人
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