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发明名称
RULER FOR CURVE FOR SECONDARY DEGREE SUCH AS PARABOLA, HYPERBOLA OR OVAL
摘要
申请公布号
JPH0321500(A)
申请公布日期
1991.01.30
申请号
JP19890002342
申请日期
1989.01.09
申请人
OGATA SHOZO
发明人
OGATA SHOZO
分类号
B43L11/00;B43L11/04
主分类号
B43L11/00
代理机构
代理人
主权项
地址
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