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经营范围
发明名称
SPIRAL GROOVE FORMING METHOD
摘要
申请公布号
JPH01193123(A)
申请公布日期
1989.08.03
申请号
JP19880014575
申请日期
1988.01.27
申请人
ALPS ELECTRIC CO LTD
发明人
OKITA MASAO
分类号
B23G1/32
主分类号
B23G1/32
代理机构
代理人
主权项
地址
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