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发明名称
THREE-DIMENSIONAL MODELS
摘要
申请公布号
US3439578(A)
申请公布日期
1969.04.22
申请号
USD3439578
申请日期
1966.09.15
申请人
DAVID LIVINGSTON MCCALLUM
发明人
DAVID LIVINGSTON MCCALLUM
分类号
B23Q33/00;B23Q35/123;B23Q35/42;(IPC1-7):B23C1/16;B23C1/18
主分类号
B23Q33/00
代理机构
代理人
主权项
地址
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