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发明名称
APPARATUS FOR GENERATING INVOLUTES
摘要
申请公布号
CA452049(A)
申请公布日期
1948.10.19
申请号
CAD452049
申请日期
申请人
KAPELLA LIMITED
发明人
ERNEST ALBERT COOKE
分类号
主分类号
代理机构
代理人
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