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发明名称
PRECISION DRAFTING APPARATUS
摘要
申请公布号
US3473228(A)
申请公布日期
1969.10.21
申请号
USD3473228
申请日期
1968.05.14
申请人
WALTER ERICH HORTMANN;WERNER KARL HORTMANN
发明人
WALTER ERICH HORTMANN;WERNER KARL HORTMANN
分类号
B43L13/24;(IPC1-7):B43L13/24
主分类号
B43L13/24
代理机构
代理人
主权项
地址
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